Quotes about logic (1454 quotes, page 5)

“Let us begin with the simplest illustration possible: let us, emulating Bastiat, choose a broken pane of glass.A young hoodlum, say, heaves a brick through the window of a baker’s shop. The shopkeeper runs out furious, but the boy is gone. A crowd gathers, and begins to stare with quiet satisfaction at the gaping hole in the window and the shattered glass over the bread and pies. After a while the crowd feels the need for philosophic reflection. And several of its members are almost certain to remind each other or the baker that, after all, the misfortune has its bright side. It will make business for some glazier. As they begin to think of this they elaborate upon it. How much does a new plate glass window cost? Fifty dollars? That will be quite a sum. After all, if windows were never broken, what would happen to the glass business? Then, of course, the thing is endless. The glazier will have $50 more to spend with other merchants, and these in turn will have $50 more to spend with still other merchants, and so ad infinitum. The smashed window will go on providing money and employment in ever-widening circles. The logical conclusion from all this would be, if the crowd drew it, that the little hoodlum who threw the brick, far from being a public menace, was a public benefactor.Now let us take another look. The crowd is at least right in its first conclusion. This little act of vandalism will in the first instance mean more business for some glazier. The glazier will be no more unhappy to learn of the incident than an undertaker to learn of a death. But the shopkeeper will be out $50 that he was planning to spend for a new suit. Because he has had to replace a window, he will have to go without the suit (or some equivalent need or luxury). Instead of having a window and $50 he now has merely a window. Or, as he was planning to buy the suit that very afternoon, instead of having both a window and a suit he must be content with the window and no suit. If we think of him as a part of the community, the community has lost a new suit that might otherwise have come into being, and is just that much poorer.The glazier’s gain of business, in short, is merely the tailor’s loss of business. No new “employment” has been added. The people in the crowd were thinking only of two parties to the transaction, the baker and the glazier. They had forgotten the potential third party involved, the tailor. They forgot him precisely because he will not now enter the scene. They will see the new window in the next day or two. They will never see the extra suit, precisely because it will never be made. They see only what is immediately visible to the eye.”

Henry Hazlitt book Economics in One Lesson

Economics in One Lesson (1946), The Broken Window (ch. 2)

Death , Money , People , Feeling

“He was the only man I have ever known who at any moment, on any subject within his wide range, could make a speech, logically developed, exact in phrasing, fortified with every fact and figure, which could be taken down and printed without revisions.”

Raymond Poincaré (1860–1934) 10th President of the French Republic

Sir Arthur Salter, Personality in Politics (London, 1947), p. 198.
About

“The trouble is that once America goes off to war, it can't very well return without having fought one. If it doesn't find its enemy, for the sake of the enraged folks back home, it will have to manufacture one. Once war begins, it will develop a momentum, a logic and a justification of its own, and we'll lose sight of why it's being fought in the first place.”

Arundhati Roy (1961) Indian novelist, essayist

The Algebra of Infinite Justice September 29, (2001) http://web.archive.org/web/20011006030417/http://website.lineone.net/~jon.simmons/roy/010929ij.htm.
Articles

War , Home

“Gravitation is the only logical factor a sculptor has to contend with.”

David Smith (1906–1965) American visual artist (1906-1965)

1950s

“Structure joins the evocative concept of paradigm, a disarmingly simple dialectic of scientific change (long periods of paradigmatic "normal science" punctuated by short "revolutions"), and the apparent authority of historical example to show that major conceptual shifts in the natural sciences are effected not by logical argument alone but also by appeals to worldviews, religion, metaphysical commitments, notions of simplicity and order, and so on. The view that science, like other thought systems, advances or retreats through rhetoric and persuasion, not by logical necessity, was a revelation to people who had never practiced it or studied its history. The book comforted social scientists who wanted to assimilate their discipline to physics, Luddites who blamed social problems on scientists and engineers, and everyone who rejected authority. It repelled the philosophers of science at which it was aimed for the good reason that it undercut their belief that scientific knowledge advances by the application of rational criteria to the products of observation and experiment.”

John L. Heilbron (1934) American historian

Thomas Samuel Kuhn: 18 July 1922-17 June 1996 (1998)

People , Books , Religion , History

“Whereas reasons may, and usually do, figure among the proximate causes of belief, and thus play a part in both kinds of series (cognitive and causal), it is always possible to trace back the causal series to a point where every trace of rationality vanishes; where we are left face to face with conditions of beliefs social, physiological, and physical— which, considered in themselves, are quite a-logical in their character. /…/ on any merely naturalistic hypothesis, the rational elements in the causal series lie always on the surface. Penetrate but a short way down, and they are found no more.”

Arthur James Balfour (1848–1930) British Conservative politician and statesman

Theism and humanism

Lie , Way , Parting

“If we assume that the person asking the question is serious, there is an underlying background of purposes and understanding (the 'horizon' as Gadamer calls it) into which the question fits. If a questioner were to ask "Can pigs have wings?" a respondent within the analytic tradition might have difficulty answering, because although the idea is outrageously farfetched, current work in genetic engineering does leave open the logical possibility of creating a beast with the desired characteristics. Admittedly, there might be some refuge in challenging the asker as to whether such a monstrosity would still properly be called a pig,11 thereby invalidating the question. But if the question were asked seriously, neither the logical possibility nor the precise meaning of "pig" would be the issue at hand. The questioner would be asking for some reason in some background of understanding and purpose, and the appropriate answer (just like the appropriate answer to "Is there water in the refrigerator?") would have to be relevant to that background.”

Terry Winograd (1946) American computer scientist

Understanding Computers and Cognition: A New Foundation for Design (1986, with Fernando Flores), p. 105.
<sup>11</sup> See, for example Putnam's discussion of natural kinds in "Is semantics possible?" (1970).

Idea , Understanding , Question , Water

“Praise be to God with all due praise, and a prayer for Muhammad His chosen servant and apostle. The purpose of this treatise is to examine, from the standpoint of the study of the Law, whether the study of philosophy and logic is allowed by the Law, or prohibited, or commanded either by way of recommendation or as obligatory.”

Averroes (1126–1198) Medieval Arab scholar and philosopher

Introduction
The Decisive Treatise

God , Law , Way , Study

“Better to be without logic than without feeling.”

Charlotte Brontë book The Professor

Source: The Professor (1857), Ch. XXIV

Feeling

“A theorem is a proposition which is a strict logical consequence of certain definitions and other propositions”

Anatol Rapoport (1911–2007) Russian-born American mathematical psychologist

Anatol Rapoport. " Various meanings of “theory”." http://www.acsu.buffalo.edu/~fczagare/PSC%20504/Rapoport%20(1958).pdf American Political Science Review 52.04 (1958): 972-988.
1950s

“Perhaps the most precious possession of man is his abiding awareness of the Analogy of Proper Proportionality, the key to all metaphysical insight, and perhaps the very condition of consciousness itself. This analogical awareness is constituted of a perpetual play of ratios among ratios. A is to B, what C is to D, which is to say the ratio between A and B, is proportionable to the ratio between C and D, there being a ratio between these ratios, as well, this lively awareness of the most exquisite delicacy depends upon there being no connection whatsoever between the components. If A were linked to B, or C to D, mere logic would take the place of analogical perception, thus one of the penalties paid for literacy and a high visual culture is a strong tendency to encounter all things through a rigorous storyline, as it were. Paradoxically, connected spaces and situations exclude participation, whereas discontinuity affords room for involvement. Visual space is connected and creates detachment or non-involvement. It also tends to exclude the participation of the other senses.”

Marshall McLuhan (1911–1980) Canadian educator, philosopher, and scholar-- a professor of English literature, a literary critic, and a …

Source: 1960s, Through the Vanishing Point (1968), p.240

Penalty , Sense , Strong , Dependency

“I’ll follow the reedy tenor of his excuses and blast them with the bellowy bass of irrefutable logic!”

Robert Sheckley book Dimension of Miracles

Source: Dimension of Miracles (1968), Chapter 4 (p. 33)

“Libertarian philosophy lowers the logical and evidentiary standards for libertarian social science: if one believes that redistribution and regulation are immoral anyway because they violate self-ownership rights, then it is understandable that one would have a cavalier attitude about proving that redistribution and regulation cause unhappiness or “disorder,” or that they always serve the venal interests of politicians and bureaucrats. The orthodox libertarian schema implies that these consequentialist arguments are superfluous.”

Jeffrey Friedman (political scientist) (1959) American political scientist

Source: “What’s wrong with Libertarianism”, p. 445

Understanding , Science

“Music trains the mind, like mathematics, or logic, to precision of mind.”

Guy Gavriel Kay book Tigana

Source: Tigana (1990), Chapter 4 (p. 77)

Music , Mathematics , Training

“Here is an empire in which is the only relic of the oldest civilization of the world—one which, 2,700 years ago, according to some authorities, had a system of primary education—which had its system of logic before the time of Aristotle, and its code of morals before that of Socrates. Here is a country which has had its uninterrupted traditions and histories for so long a period—that supplied silks and other articles of luxury to the Romans 2,000 years ago! They are the very soul of commerce in the East, and one of the wealthiest nations in the world. They are the most industrious people in Asia, having acquired the name of the ants of the East…You find them not as barbarians at home, where they cultivate all the arts and sciences, and where they have carried all, except one, to a point of perfection but little below our own—but that one is war. You have there a people who have carried agriculture to a state of horticulture, and whose great cities rival in population those of the Western world. Now, there must be something in such a people deserving of respect. If in speaking of them we stigmatize them as barbarians, and threaten them with force because we say they are inaccessible to reason, it must be because we do not understand them; because their ways are not our ways, nor our ways theirs. Now, is not so venerable an empire as that deserving of some sympathy—at least of some justice—at the hands of conservative England?”

Richard Cobden (1804–1865) English manufacturer and Radical and Liberal statesman

Speech http://hansard.millbanksystems.com/commons/1857/feb/26/resolutions-moved-debate-adjourned in the House of Commons (26 February 1857) on China.
1850s

War , People , World , Education

“We are what we were at birth, and each trait has remained
in conformity with earth's and with heaven's logic:
Be the devil's tool, resort to black magic,
None can diverge from the ends which Heaven foreordained.”

Marianne Moore (1887–1972) American poet and writer

"The Mouse Metamorphosed into a Maid"
The Poems of Marianne Moore (2003)

Birth

“Dimensionless constants in the laws of nature, which from the purely logical point of view can just as well have different values, should not exist.”

Albert Einstein (1879–1955) German-born physicist and founder of the theory of relativity

German orgiginal: Dimensionslose Konstanten in den Naturgesetzen, die vom rein logischen Standpunkt aus ebensogut andere Werte haben können, dürfte es nicht geben.
As quoted in Begegnungen mit Einstein, von Laue, und Planck (1988) by Ilse Rosenthal-Schneider, p. 31, English edition Reality and Scientific Truth : Discussions with Einstein, von Laue, and Planck (1980) by Ilse Rosenthal-Schneider
Attributed in posthumous publications

Law , Nature

“Logic and ethics are fundamentally the same, they are no more than duty to oneself. They celebrate their union by the highest service of truth.”

Otto Weininger book Sex and Character

Logik und Ethik aber sind im Grunde nur eines und das-selbe.
Pflicht gegen sich selbst. Sie feiern ihre Vereinigung im höchsten Werte der Wahrheit...
Source: Sex and Character (1903), p. 159.

Truth

“Formal theories of organization have been taught in management courses for many years, and there is an extensive literature on the subject. The textbook principles of organization — hierarchical structure, authority, unity of command, task specialization, division of staff and line, span of control, equality of responsibility and authority, etc. — comprise a logically persuasive set of assumptions which have had a profound influence upon managerial behavior.”

Douglas McGregor (1906–1964) American professor

Source: The Human Side of Enterprise (1960), p. 15 (p. 21 in 2006 edition)

Behavior , Literature

“Imagism was a reductio ad absurdum of one or two tendencies of romanticism, such a beautifully and finally absurd one that it is hard to believe it existed as anything but a logical construction; and what imagist found it possible to go on writing imagist poetry? A number of poets have stopped writing entirely; others, like recurring decimals, repeat the novelties they commeced with, each time less valuably than before. And there are surrealist poetry, and political poetry, and all the othe refuges of the indigent.”

Randall Jarrell (1914–1965) poet, critic, novelist, essayist

“A Note on Poetry”, p. 50
Kipling, Auden & Co: Essays and Reviews 1935-1964 (1980)

Time

“It is, I claim, nonsense to say that it does not matter which individual man acted as the nucleus for the change. It is precisely this that makes history unpredictable into the future. The Marxian error is a simple blunder in logical typing, a confusion of individual with class.”

Gregory Bateson (1904–1980) English anthropologist, social scientist, linguist, visual anthropologist, semiotician and cyberneticist

Source: Mind and Nature, a necessary unity, 1988, p. 45

Error , History , Change , Future

“…and then President Robbins began to speak.
After two sentences one realized once more that President Robbins was an extraordinary speaker, a speaker of a—one says an almost extinct school, but how does one say the opposite? a not-yet-evolved school? He did something so logical that it is impossibe that no one else should have thought of it, yet no one has. President Robbins crooned his speeches.
His voice not only took you into his confidence, it laid a fire for you and put your slippers by it and then went into the other room to get into something more comfortable. It was a Compromising voice.”

Randall Jarrell book Pictures from an Institution

Source: Pictures from an Institution (1954) [novel], Chapter 1, p. 25

School , Confidence

“Thirty percent of Republicans believe the scourge of the Earth is Mexican immigration. What's the reason for why I don't have a job? Well, make, make Mexican immigration the scapegoat for that. I understand why there's that sentiment. And there's a logic to the fact that they're coming over. They're taking our jobs. They're taking, you know, they're siphoning off our welfare system. When the reality is anything but. They are not taking jobs that U. S. citizens want. They're the cream of the crop when it comes to workers. And they are contributing to the economy.”

Gary Johnson (1953) American politician, businessman, and 29th Governor of New Mexico

2016, Interview with CNBC's John Harwood (August 22, 2016)

Understanding , Reality

“Thus, as [Karl] Kautsky wrote in 1919, there was growing up amid despotic conditions a new class of bureaucratic German exploiters, no better than the Tsarist chinovniks; and the workers’ future struggle against tyranny would be even more desperate than under traditional capitalism, when they could exploit divergences of interest between capital and the state bureaucracy, whereas in Bolshevik Russia these two had coalesced into one. This kind of regimented socialism could only maintain itself by denying its own principles, which it was most likely to do, given the Bolsheviks’ notorious opportunism and the ease with which they changed their tune from one day to the next. The most probable result would be a kind of Thermidor reaction which the Russian workers would welcome as a liberation, like the French in 1794. The original sin of Bolshevism lay in the suppression of democracy, abolition of elections, and denial of the freedom of speech and assembly, and in the belief that socialism could be based on a minority despotism imposed by force, which by its own logic was bound to intensify the rule of terror. If the Leninists were able to keep their "Tartar socialism" going long enough, it would infallibly result in the bureaucratization and militarization of society and finally in the autocratic rule of a single individual.”

Leszek Kolakowski (1927–2009) Philosopher, historian of ideas

pg. 51
Main Currents Of Marxism (1978), Three Volume edition, Volume II, The Golden Age

Democracy , Freedom , Change , Future

“The practical mastery of the logic or of the imminent necessity of a game — a mastery acquired by experience of the game, and one which works outside conscious control and discourse (in the way that. for instance, techniques of the body do).”

Pierre Bourdieu (1930–2002) French sociologist, anthropologist, and philosopher

(1990), In Other Words p. 60

Way , Game

“Philosophy … lost its prestige to the extent that it lost its evident advantage in cleverness to "normal life." In the transition from archaic teachings of wisdom to philosophy based on argument, it itself was engulfed in the twilight of alienation from life. It had to accept that the independent cleverness theories of pragmatics, economics, strategy, and politics proved themselves to be its better, until, with its logical niceties, it became infantile and academic, and stood there as the Utopian idiot with its reminiscences about great ideals. Today philosophy is surrounded on all sides by maliciously clever empiricisms and realistic disciplines that "know better."”

Peter Sloterdijk (1947) German philosopher

Source: Kritik der zynischen Vernunft [Critique of Cynical Reason] (1983), p. 536

Life , Wisdom

“Fascism must be seen as an episodically logical stage in the socio-economic development of capitalism in a state of crisis. It is the result of a revolutionary thrust that was weak and miscarried — a consciousness that was compromised.”

George Jackson (activist) (1941–1971) activist, Marxist, author, member of the Black Panther Party, and co-founder of the Black Guerrilla Family

Source: Blood in My Eye (1971), p. 137

“I want to offer a little ode to the importance of studying history. We’ve seen the assertion of “alternative facts” – meaning, essentially, a denial of actual facts. We’ve see the proliferation of “fake news,” along with the suggestion that it’s impossible to differentiate between “real” and “fake” news. Studying history responsibly does some handy things. It compels you to confront and consider ugly realities as part of a bigger picture. Studying history compels you to investigate, evaluate, compare, and analyze evidence to help you piece together ACTUAL facts. And in teaching people to evaluate evidence in search of facts, it trains them to logically analyze and interpret news for themselves. [F]or those insisting that the humanities has no value, we are getting daily examples of how the study of history offers practical tools for understanding not only the past, but the present.”

Joanne B. Freeman (1962) US historian and tenured professor of History and American Studies at Yale University

Twitter (6 Mar 2017) https://twitter.com/jbf1755/status/838897292132421632

People , History , Search , Understanding

“He has told me he likes men as well as he likes women, which seems only natural, he says, since he is the offspring of two sexes as well as two races. No one is surprised he is biracial; why should they be surprised he is bisexual? This is an explanation I have never heard and cannot entirely grasp; it seems too logical for my brain.”

Alice Walker book Possessing the Secret of Joy

Possessing the Secret of Joy (1992).

Women , Men , Sex , Nature

“Aillas replied that while King Audry cited several points of technical interest, and used the resources of abstract logic in an adroit manner, he had actually made no connection with reality.”

Jack Vance Lyonesse Trilogy

Source: Lyonesse Trilogy (1983-1989), The Green Pearl (1985), Chapter 16, section 2 (p. 626)

Reality

“There are, then, syntactical problems in the fields of perceptual signs, aesthetic signs, the practical use of signs, and general linguistics which have not been treated within the framework of what today is regarded as logical syntax and yet which form part of syntactics as this is here conceived.”

Charles W. Morris (1903–1979) American philosopher

Source: "Foundations of the Theory of Signs," 1938, p. 16; partly cited in: [[Alan MacEachren|MacEachren (1995:235)

Problem , Parting

“The typographic logic created “the outsider,” the alienated mass, as the type of integral, that is, intuitive and irrational, man.”

Marshall McLuhan (1911–1980) Canadian educator, philosopher, and scholar-- a professor of English literature, a literary critic, and a …

Source: 1960s, The Gutenberg Galaxy (1962), p. 241

“New diseases like syphilis seemed to call for new and "stronger" medicines; and this became one of the stock arguments for resort to the Paracelsian chemical pharmacopeia and mystical medical philosophy. With every fundamental of medicine thus called into question, the only logical recourse was to observe results of cures administered in accordance with the old Galenic as against the new Paracelsian theories, and then to choose whichever worked better. The swift development of European medical practice to levels of skill exceeding all other civilized traditions resulted.”

William H. McNeill (1917–2016) Canadian historian

Source: Plagues and Peoples (1976), Ch.6.

Disease , Question

“Scientific Management is not a new "system," something "invented" by a man called F. W. Taylor, a passing novelty." It is something much deeper, an attitude towards the control of human systems of co-operation of all kinds rendered essential by the immense accretion of power over material things ushered in by the industrial revolution…
What Taylor did was not to invent something quite new, but to synthesise and present as a reasonably coherent whole ideas which had been germinating and gathering force in Great Britain and the United States throughout the nineteenth century. He gave to a disconnected series of initiatives and experiments a philosophy and a title; complete unity was not within his scope… It was left to others to extend his philosophy to other functions and especially to Henri Fayol, a Frenchman, to develop logical principles for the administration of a large-scale undertaking as a whole.
It detracts nothing from Taylor's greatness to see him thus as a man who focussed his thought of the preceding age, carried that thought forward with a group of friends and colleagues whose united contribution was so outstanding as to constitute a "golden age" of management in the United States and laid the intellectual foundations on which all subsequent work in Great Britain and many other countries has been based. But it is impossible to understand Taylor's achievement or the significance of Scientific Management for our society, unless his individual work is seen against the background of this larger whole of which it is only a part.”

Lyndall Urwick (1891–1983) British management consultant

Vol I. p. 16-17; as cited in: Harry Arthur Hopf. Historical perspectives in management https://catalog.hathitrust.org/Record/009425985. Ossining, N.Y., 1947. p. 4-5
1940s, The Making Of Scientific Management, 1945

Age , Idea , Understanding , Parting

“On the ground either of positivism or of materialism, ethics can never, properly speaking, be morals. If it escapes fatalism of the hardest sort, with all the consequent hopelessness for most, it cannot avoid hedonism, nor, in the logical end, an egoistic and utterly transient and trivial hedonism.”

George Holmes Howison (1834–1916) American philosopher

Source: The Limits of Evolution, and Other Essays, Illustrating the Metaphysical Theory of Personal Ideaalism (1905), Appendix B: The System in its Ethical Necessity and its Practical Bearings, p.395-6

“The great attraction of cultural anthropology in the past was precisely that it seemed to offer such a richness of independent natural experiments; but unfortunately it is now clear that there has been a great deal of historical continuity and exchange among those "independent" experiments, most of which have felt the strong effect of contact with societies organized as modern states. More important, there has never been a human society with unlimited resources, of three sexes, or the power to read other people's minds, or to be transported great distances at the speed of light. How then are we to know the effect on human social organization and history of the need to scrabble for a living, or of the existence of males and females, or of the power to make our tongues drop manna and so to make the worse appear the better reason? A solution to the epistemological impotence of social theory has been to create a literature of imagination and logic in which the consequences of radical alterations in the conditions of human existence are deduced. It is the literature of science fiction. … [S]cience fiction is the laboratory in which extraordinary social conditions, never possible in actuality, are used to illumine the social and historical norm. … Science fiction stories are the Gedanken experiments of social science.”

Richard C. Lewontin (1929) American evolutionary biologist

" The Last of the Nasties? http://www.nybooks.com/articles/archives/1996/feb/29/the-last-of-the-nasties," The New York Review of Books, 29 February 1996;
Review of The Lost World by Michael Crichton

People , Sex , Imagination , History

“But it is logically impossible that there could exist an 'unowned' dent, a dent without a surface that is dented.”

Simon Blackburn (1944) British academic philosopher

Source: Think (1999), Chapter Four, The Self, p. 136

“Though, by the logic of this tribe, the best promoters of India’s unity were the British. They did far more and succeeded to a much greater extent in imposing a unity on India. By that logic, General Dyer of the Jallianwala Bagh fame comes out with flying colours as the foremost builder of an Indian nation. He was also very ruthless in gunning down unarmed people who were not impressed by the “benefits of the British Raj.””

Sita Ram Goel book The Calcutta Quran Petition

The Calcutta Quran Petition (1986)

People , Flying

“In my message last year I emphasized the necessity for further legislation with a view to expediting the consolidation of our rail ways into larger systems. The principle of Government control of rates and profits, now thoroughly embedded in our governmental attitude toward natural monopolies such as the railways, at once eliminates the need of competition by small units as a method of rate adjustment. Competition must be preserved as a stimulus to service, but this will exist and can be increased tinder enlarged systems. Consequently the consolidation of the railways into larger units for the purpose of securing the substantial values to the public which will come from larger operation has been the logical conclusion of Congress in its previous enactments, and is also supported by the best opinion in the country. Such consolidation will assure not only a greater element of competition as to service, but it will afford economy in operation, greater stability in railway earnings, and more economical financing. It opens large possibilities of better equalization of rates between different classes of traffic so as to relieve undue burdens upon agricultural products and raw materials generally, which are now not possible without ruin to small units owing to the lack of diversity of traffic. It would also tend to equalize earnings in such fashion as to reduce the importance of section 15A, at which criticism, often misapplied, has been directed. A smaller number of units would offer less difficulties in labor adjustments and would contribute much to the, solution of terminal difficulties.”

Calvin Coolidge (1872–1933) American politician, 30th president of the United States (in office from 1923 to 1929)

1920s, Second State of the Union Address (1924)

Way , Fashion , Support , Nature

“We are so accustomed to hear arithmetic spoken of as one of the three fundamental ingredients in all schemes of instruction, that it seems like inquiring too curiously to ask why this should be. Reading, Writing, and Arithmetic—these three are assumed to be of co-ordinate rank. Are they indeed co-ordinate, and if so on what grounds?
In this modern “trivium” the art of reading is put first. Well, there is no doubt as to its right to the foremost place. For reading is the instrument of all our acquisition. It is indispensable. There is not an hour in our lives in which it does not make a great difference to us whether we can read or not. And the art of Writing, too; that is the instrument of all communication, and it becomes, in one form or other, useful to us every day. But Counting—doing sums,—how often in life does this accomplishment come into exercise? Beyond the simplest additions, and the power to check the items of a bill, the arithmetical knowledge required of any well-informed person in private life is very limited. For all practical purposes, whatever I may have learned at school of fractions, or proportion, or decimals, is, unless I happen to be in business, far less available to me in life than a knowledge, say, of history of my own country, or the elementary truths of physics. The truth is, that regarded as practical arts, reading, writing, and arithmetic have no right to be classed together as co-ordinate elements of education; for the last of these is considerably less useful to the average man or woman not only than the other two, but than 267 many others that might be named. But reading, writing, and such mathematical or logical exercise as may be gained in connection with the manifestation of numbers, have a right to constitute the primary elements of instruction. And I believe that arithmetic, if it deserves the high place that it conventionally holds in our educational system, deserves it mainly on the ground that it is to be treated as a logical exercise. It is the only branch of mathematics which has found its way into primary and early education; other departments of pure science being reserved for what is called higher or university instruction. But all the arguments in favor of teaching algebra and trigonometry to advanced students, apply equally to the teaching of the principles or theory of arithmetic to schoolboys. It is calculated to do for them exactly the same kind of service, to educate one side of their minds, to bring into play one set of faculties which cannot be so severely or properly exercised in any other department of learning. In short, relatively to the needs of a beginner, Arithmetic, as a science, is just as valuable—it is certainly quite as intelligible—as the higher mathematics to a university student.”

Joshua Girling Fitch (1824–1903) British educationalist

Source: Lectures on Teaching, (1906), pp. 267-268.

Life , Truth , Education , School

“Even though principles of rationality seem as often violated as followed, we still cling to the notion that human thought should be rational, logical, and orderly. Much of law is based upon the concept of rational thought and behavior. Much of economic theory is based upon the model of the rational human who attempts to optimize personal benefit, utility, or comfort. Many scientists who study artificial intelligence use the mathematics of formal logic—the predicate calculus—as their major tool to simulate thought. […] Human thought is not like logic; it is fundamentally different in kind and spirit. The difference is neither worse nor better. But it is the difference that leads to creative discovery and to great robustness of behavior.”

Donald A. Norman book The Design of Everyday Things

Source: The Design of Everyday Things (1988, 2002), Ch. 5, pp. 114–115.

Law , Behavior , Intelligence , Mathematics

“Secondly, the student is trained to accept historical mis-statements on the authority of the book. If education is a pre- paration for adult life, he learns first to accept without question, and later to make his own contribution to the creation of historical fallacies, and still later to perpetuate what he has learnt. In this way, ignorant authors are leading innocent students to hysterical conclusions. The process of the writers' mind provides excellent material for a manual on logical fallacies. Thirdly, the student is told nothing about the relationship between evidence and truth. The truth is what the book ordains and the teacher repeats. No source is cited. No proof is offered. No argument is presented. The authors play a dangerous game of winks and nods and faints and gestures with evidence. The art is taught well through precept and example. The student grows into a young man eager to deal in assumptions but inapt in handling inquiries. Those who become historians produce narratives patterned on the textbooks on which they were brought up. Fourthly, the student is compelled to face a galling situation in his later years when he comes to realize that what he had learnt at school and college was not the truth. Imagine a graduate of one of our best colleges at the start of his studies in history in a university in Europe. Every lecture he attends and every book he reads drive him mad with exasperation, anger and frustration. He makes several grim discoveries. Most of the "facts", interpretations and theories on which he had been fostered in Pakistan now turn out to have been a fata morgana, an extravaganza of fantasies and reveries, myths and visions, whims and utopias, chimeras and fantasies.”

Khursheed Kamal Aziz (1927–2009) historian

The Murder of History, critique of history textbooks used in Pakistan, 1993

Life , Truth , Books , Education

“In formal logic, a contradiction is the signal of a defeat; but in the evolution of real knowledge it marks the first step in progress towards victory.”

Alfred North Whitehead (1861–1947) English mathematician and philosopher

1920s, Science and the Modern World (1925)

Knowledge , Victory

“Under Aristotle the "Reader," whose knowledge of Trojan aretê seems conspicuously absent, forms and substances dominate all. The Good is a relatively minor branch of knowledge called ethics; reason, logic, knowledge are his primary concerns. Aretê is dead and science, logic and the University as we know it today have been given their founding charter: to find and invent an endless proliferation of forms about the substantive elements of the world and call these forms knowledge, and transmit these forms to future generations. As "the system."”

Robert M. Pirsig book Zen and the Art of Motorcycle Maintenance

Source: Zen and the Art of Motorcycle Maintenance (1974), Ch. 29

World , Knowledge , Universe , Science

“Opera, next to Gothic architecture, is one of the strangest inventions of western man. It could not have been foreseen by any logical process.”

Kenneth Clark (1903–1983) Art historian, broadcaster and museum director

Source: Civilisation (1969), Ch. 9: The Pursuit of Happiness

“Starting from a logically clear concept of probability, based on experience, using arguments which are usually called statistical, we can discover truth in wide domains of human interest.”

Richard von Mises (1883–1953) Austrian physicist and mathematician

Sixth Lecture, Statistical Problems in Physics, p. 220
Probability, Statistics And Truth - Second Revised English Edition - (1957)

Truth

“Relations between States and within States are correct to the extent that they respect the truth. When, instead, truth is violated, peace is threatened, law is endangered, then, as a logical consequence, forms of injustice are unleashed.”

Pope Benedict XVI (1927) 265th Pope of the Catholic Church

In Address to the International Diplomats Address to the International Diplomats http://www.vatican.va/holy_father/benedict_xvi/speeches/2006/march/documents/hf_ben-xvi_spe_20060318_intern-organizations_en.html (18 March 2006)
2006

Truth , Peace , Law

“In the Vienna of the late 1020s and 1930s there throve an internationally famous philosophical bunch called the logical positivists. …They said that a key ingredient of knowledge was "sense data," and proclaimed emphatically, in the words of… J. S. L. Gilmour, that sense data are "objective and unalterable."”

Howard Bloom (1943) American publicist and author

…Good guess, but no cigar!
Source: Global Brain: The Evolution of Mass Mind from the Big Bang to the 21st Century (2000), Ch.7 A Trip Through the Perception Factory

Knowledge , Sense

“The reciprocal relationship of epistemology and science is of noteworthy kind. They are dependent on each other. Epistemology without contact with science becomes an empty scheme. Science without epistemology is — insofar as it is thinkable at all — primitive and muddled. However, no sooner has the epistemologist, who is seeking a clear system, fought his way through to such a system, than he is inclined to interpret the thought-content of science in the sense of his system and to reject whatever does not fit into his system. The scientist, however, cannot afford to carry his striving for epistemological systematic that far. He accepts gratefully the epistemological conceptual analysis; but the external conditions, which are set for him by the facts of experience, do not permit him to let himself be too much restricted in the construction of his conceptual world by the adherence to an epistemological system. He therefore must appear to the systematic epistemologist as a type of unscrupulous opportunist: he appears as realist insofar as he seeks to describe a world independent of the acts of perception; as idealist insofar as he looks upon the concepts and theories as free inventions of the human spirit (not logically derivable from what is empirically given); as positivist insofar as he considers his concepts and theories justified only to the extent to which they furnish a logical representation of relations among sensory experiences. He may even appear as Platonist or Pythagorean insofar as he considers the viewpoint of logical simplicity as an indispensible and effective tool of his research.”

Albert Einstein (1879–1955) German-born physicist and founder of the theory of relativity

Contribution in Albert Einstein: Philosopher-Scientist, p. A. Schilpp, ed. (The Library of Living Philosophers, Evanston, IL (1949), p. 684). Quoted in Einstein's Philosophy of Science http://plato.stanford.edu/entries/einstein-philscience/
1940s

World , Way , Sense , Appearance

“The viewpoint of the formalist must lead to the conviction that if other symbolic formulas should be substituted for the ones that now represent the fundamental mathematical relations and the mathematical-logical laws, the absence of the sensation of delight, called "consciousness of legitimacy," which might be the result of such substitution would not in the least invalidate its mathematical exactness. To the philosopher or to the anthropologist, but not to the mathematician, belongs the task of investigating why certain systems of symbolic logic rather than others may be effectively projected upon nature. Not to the mathematician, but to the psychologist, belongs the task of explaining why we believe in certain systems of symbolic logic and not in others, in particular why we are averse to the so-called contradictory systems in which the negative as well as the positive of certain propositions are valid.”

L. E. J. Brouwer (1881–1966) Dutch mathematician and logician

as translated by Arnold Dresden from: Brouwer, L. E. J. (1913). Intuitionism and formalism. Bulletin of the American Mathematical Society, 20(2), 81–96. (quote on p. 84)

Law , Mathematics , Nature

““There are moments when I feel Howards End peculiarly our own." "All the same, London's creeping." She pointed over the meadow--over eight or nine meadows, but at the end of them was a red rust. "You see that in Surrey and even Hampshire now," she continued. "I can see it from the Purbeck Downs. And London is only part of something else, I'm afraid. Life's going to be melted down, all over the world." Margaret knew that her sister spoke truly. Howards End, Oniton, the Purbeck Downs, the Oderberge, were all survivals, and the melting-pot was being prepared for them. Logically, they had no right to be alive. One's hope was in the weakness of logic. Were they possibly the earth beating time?”

E.M. Forster book Howards End

Source: Howards End (1910), Ch. 44

Life , World , Hope , Feeling

“Consider the attitude our great Vasile Conta held in the Chamber in 1879. Fifty years earlier the Romanian philosopher demonstrated with unshakeable scientific arguments, framed in a system of impeccable logic, the soundness of racial truths that must lie at the foundation of the national state…”

Corneliu Zelea Codreanu (1899–1938) Romanian politician

For My Legionaries: The Iron Guard (1936), Nation and Culture

Truth , Lie

“Every time one combines and records facts in accordance with established logical processes, the creative aspect of thinking is concerned only with the selection of the data and the process to be employed, and the manipulation thereafter is repetitive in nature and hence a fit matter to be relegated to the machines.”

Vannevar Bush book As We May Think

As We May Think (1945)

Nature , Thinking , Time

“Between emotion and logic resides the fate of thousands of the mostly unknown… who will surely then and now be asked to settle through violence what words alone cannot. Remember them, for the Peloponnesian War was theirs alone.”

Victor Davis Hanson (1953) American military historian, essayist, university professor

2000s, A War Like No Other - How the Athenians and Spartans Fought the Peloponnesian War (2005)

Fate , War

“Another feature of Alexandrian algebra is the absence of any explicit deductive structure. The various types of numbers… were not defined. Nor was there any axiomatic basis on which a deductive structure could be erected. The work of Heron, Nichomachus, and Diophantus, and of Archimedes as far as his arithmetic is concerned, reads like the procedural texts of the Egyptians and Babylonians… The deductive, orderly proof of Euclid and Apollonius, and of Archimedes' geometry is gone. The problems are inductive in spirit, in that they show methods for concrete problems that presumably apply to general classes whose extent is not specified. In view of the fact that as a consequence of the work of the classical Greeks mathematical results were supposed to be derived deductively from an explicit axiomatic basis, the emergence of an independent arithmetic and algebra with no logical structure of its own raised what became one of the great problems of the history of mathematics. This approach to arithmetic and algebra is the clearest indication of the Egyptian and Babylonian influences… Though the Alexandrian Greek algebraists did not seem to be concerned about this deficiency… it did trouble deeply the European mathematicians.”

Morris Kline (1908–1992) American mathematician

Source: Mathematical Thought from Ancient to Modern Times (1972), p.144

History , Mathematics , Problem , Reading

“Where such a separation is complete one group of individuals, the security holders and in particular the stockholders, performs the function of risk-takers and suppliers of capital, while a separate group exercises control and ultimate management. In such a case, if profits are to be received only by the security holders, as the traditional logic of property would require, how can they perform both of their traditional economic roles? Are no profits to go to those who exercise control and in whose hands the efficient operation of enterprise ultimately rests? …Furthermore, if all profits are earmarked for the security holder, where is the inducement for those in control to manage the enterprise efficiently? When none of the profits are to be received by them, why should they exert themselves beyond the amount necessary to maintain a reasonably satisfied group of stockholders.”

Adolf A. Berle (1895–1971) American diplomat

1967, p. 303
The Modern Corporation and Private Property. 1932/1967

Exercises

““What is the Vienna Circle?” is a question which is neither rhetorical nor trivial. It is perhaps an attempt to ‘square the circle’ – which is, meanwhile, mathematically possible, as Karl Menger described as early as 1934.
This question might be also a problem of how the whole relates logically to the parts or the parts to the whole, which was already addressed by mereology (whole-part theory) according to Stanislaw (1916).
Of course, we are all familiar with the irritating fact that one and the same phenomenon can be described consistently by more than one theory”

Friedrich Stadler (1951) Austrian historian

underdetermination of a theory by observation
Source: "What is the Vienna Circle?" 2006, p. xi

Mathematics , Question , Problem , Parting

“Tsenov is famous in Italy for his logical Bulgarian erudition and in Germany, with his previous work, he has revolutionized the origin of the Bulgarians and the other Slavs in the Balkans … The thesis on the Thracian-Bulgarian origin of the Bulgarians was supported by Tsenov with a great controversial liveliness, sometimes quite brave, always resting on arguments that can not be denied without an absolute competence, because the author who has devoted his entire life to this study does not allow concessions … He establishes in a complete picture Irvine inhabit life, the language of the Thracians and Illyrians, ethnic influence they exercised on the development of peoples-conquerors in the Balkans, to reach aboriginal character of the Bulgarians, which is comprehensively addressed and clearly and accurately exposed. All this work has been examined with a critical chronological and convincing method. He deserves praise. Mr. Tsenov shows that he is a man who has a deep knowledge and a great skill, a man who has put all his love and his whole excitement, always inspired by a belief that undoubtedly gives him the right to delight.”

Gancho Tsenov (1870–1949) Bulgarian historian

quotations for him
Source: prof. dr. Antonio Baldaci, член на Италианската АН, сп. „Светоглас”, юни (June), 1937 г., стр. 6

Love , Life , People , Exercises

“Logically, faith comes first, and love next; but in life they will spring up together in the soul; the interval which separates them is impalpable, and in every act of trust, love is present; and fundamental to every emotion of love to Christ is trust in Christ.”

Alexander Maclaren (1826–1910) British minister

Source: Dictionary of Burning Words of Brilliant Writers (1895), P. 237.

Love , Life , Faith , Soul

“The state-initiated referendum has always been a part of this [anti-democratic] logic. Stop the talk, we're going to decide, yes or no. At this point the citizen's role is to wave one flag or the other and cheer for one side of the simple question or the other. In other words, we're reduced to children.”

John Ralston Saul (1947) Canadian author and essayist

Reflections of a Siamese Twin (1997)

Children , Question , Parting

“The Gettysburg speech was at once the shortest and the most famous oration in American history… But let us not forget that it is poetry, not logic; beauty, not sense. Think of the argument in it! Put it into the cold words of everyday! The doctrine is simply this: that the Union soldiers who died at Gettysburg sacrificed their lives to the cause of self-determination – "that government of the people, by the people, for the people, should not perish from the earth". It is difficult to imagine anything more untrue. The Union soldiers in the battle actually fought against self-determination; it was the Confederates who fought for the right of their people to govern themselves.”

H.L. Mencken (1880–1956) American journalist and writer

Source: 1920s, Prejudices, Third Series (1922), Ch. 8

People , Beauty , Imagination , History

“What renders a problem definite, and what leaves it indefinite, may best be understood from mathematics. The very important idea of solving a problem within limits of error is an element of rational culture, coming from the same source. The art of totalizing fluctuations by curves is capable of being carried, in conception, far beyond the mathematical domain, 65 where it is first learned. The distinction between laws and coefficients applies in every department of causation. The theory of Probable Evidence is the mathematical contribution to Logic, and is of paramount importance.”

Alexander Bain (1818–1903) Scottish philosopher and educationalist

Source: Education as a Science, 1898, pp. 151-152.

Law , Art , Error , Mathematics

“I was asked by one of the reports whether or not I would call Mary Cheney a selfish hedonist. I didn't mention her name. See, one of the articles said I had mentioned her. This is not true. I didn't mentioned her. But leave that aside. All I said was, she had come forward as a lesbian, she identifies herself as someone who engages in homosexual sexuality. I have just said that by definition, it involves selfish hedonism. I can't change that. Now, it might be true [that] the argument I've just given is the best argument in support of the Republican plank on gay marriage that I think can be made. There are lots of other arguments that can be added, but, in principle, that's the best one because we need to understand that marriage is procreational sex, not recreational sex. Now, I want to tell you. If my daughter or anybody else engages in behavior that put them under that descriptive label, I will not consent to lie about it, and I will not tell the American people that I support a plank that requires this logic and then exempt my daughter from the logic that it requires.”

Alan Keyes (1950) American politician

Party for the President, September 2, 2004. http://renewamerica.us/archives/speeches/04_09_02partypresident.htm.
2009

Marriage , People , Lie , Sex

“Determinism, in the strict sense, is self-contradictory. For if man’s mental processes—specifically, his attempts at reasoning—are not free, if they are determined by environment and heredity, then there is no means of claiming that theory x is true and y is false—since man can have no way of knowing that his mental processes might not be conditioned to force him to believe that x is logical, when in fact it is not.”

Roy A. Childs, Jr. (1949–1992) American libertarian essayist and critic

Source: “Big Business and the Rise of American Statism,” 1969, p. 23

Way , Sense , Falseness

“I was just trying to show you,” he went on, “just how insubstantial a ‘common sense’ idea can be when you pin it down. Neither ‘common sense’ nor ‘logic’ can prove anything. Proof comes from experiment, or to put it another way, from experience, and from nothing else.”

Robert A. Heinlein book Rocket Ship Galileo

Source: Rocket Ship Galileo (1947), Chapter 10, “The Method of Science”, p. 105

Way , Idea , Sense

“Light breaks on secret lots,
On tips of thought where thoughts smell in the rain;
When logics die,
The secret of the soil grows through the eye,
And blood jumps in the sun;
Above the waste allotments the dawn halts.”

Dylan Thomas (1914–1953) Welsh poet and writer

Light Breaks Where No Sun Shines, st. 1 (1934), st. 5

Secret , Light , Sun

“The natural philosophy of Democritus and some others, who did not suppose a mind or reason in the frame of things, but attributed the form thereof able to maintain itself to infinite essays or proofs of nature, which they term fortune, seemeth to me… in particularities of physical causes more real and better inquired than that of Aristotle and Plato; whereof both intermingled final causes, the one as a part of theology, and the other as a part of logic, which were the favourite studies respectively of both those persons. Not because those final causes are not true, and worthy to be inquired, being kept within their own province; but because their excursions into the limits of physical causes hath bred a vastness and solitude in that tract.”

Francis Bacon book The Advancement of Learning

Book VII, 7
The Advancement of Learning (1605)

Nature , Solitude , Study , Parting

“Combinatory play seems to be the essential feature in productive thought — before there is any connection with logical construction in words or other kinds of signs which can be communicated to others.”

Albert Einstein (1879–1955) German-born physicist and founder of the theory of relativity

Ideas and Opinions (1954), pp. 25–26
1950s

Communication

“My analysis of the judicial process comes then to this, and little more: logic, and history, and custom, and utility, and the accepted standards of right conduct, are the forces which singly or in combination shape the progress of the law. Which of these forces dominate depends largely upon the comparative importance or value of the social interests that will be thereby promoted or impaired. … The most fundamental social interest is that law shall be uniform and impartial. … Uniformity ceases to be a good when it becomes uniformity of oppression.”

Benjamin N. Cardozo (1870–1938) United States federal judge

Page 112
Other writings, The Nature of the Judicial Process (1921)

Law , History , Dependency

“The statement of ideas in a poem may have to do with logic. More profoundly, it may be identified with the emotional progression of the poem, in terms of the music and images, so that the poem is alive throughout.
Another, more fundamental statement in poetry, is made through the images themselves — those declarations, evocative, exact, and musical, which move through time and are the actions of a poem.”

Muriel Rukeyser (1913–1980) poet and political activist

Source: The Life of Poetry (1949), p. 31

Music , Idea , Time

“But he was a quick study. An autodidact. Anything that was technical, that was logical, that ran according to rules, Peter could figure out. And knew it. Didn’t bother to ask for help. So much quicker to work it out on his own than suffer through someone’s well-meaning efforts to educate him—and to forge an emotional connection with him in so doing. There was something, somewhere, that he could do better than most people.”

Neal Stephenson book Reamde

Thanksgiving (prologue)
Reamde (2011), Part I: Nine Dragons

People , Education , Effort , Study

“A classical concept in Hinduism has been that a true proposition has to be consistent with sruti, yukti (reason/logic) and anubhava.”

Rajiv Malhotra book Indra's Net

Source: Indra's Net (2014)

“Time and Space, and all that both "contain," owe their entire existence to the essential correlation and coexistence of minds. This coexistence is not to be thought of as either their simultaneity or their contiguity. It is not at all spatial, nor temporal, but must be regarded as simply their logical implication of each other in the self-defining consciousness of each. And this recognition of each other as all alike self-determining, renders their coexistence a moral order.”

George Holmes Howison (1834–1916) American philosopher

Source: The Limits of Evolution, and Other Essays, Illustrating the Metaphysical Theory of Personal Ideaalism (1905), Preface to First Edition, p.xiii

Time

“The fact that I myself, at the moment of painting, do not understand my own pictures, does not mean that these pictures have no meaning; on the contrary, their meaning is so profound, complex, coherent, and involuntary that it escapes the most simple analysis of logical intuition. To describe my pictures in everyday language, to explain them, it is necessary to submit them to special analyses and preferably with the most ambitiously objective scientific rigour possible. Then all explanation arises a posteriori; once the picture already exists as phenomenon.”

Salvador Dalí (1904–1989) Spanish artist

Source: Quotes of Salvador Dali, 1931 - 1940, My Pictorial Struggle', S. Dali, 1935, Chapter: 'My Pictorial Struggle', pp. 11-12

Understanding , Painting

“Prejudices are rarely overcome by argument; not being founded in reason they cannot be destroyed by logic.”

Tryon Edwards (1809–1894) American theologian

Source: A Dictionary of Thoughts, 1891, p. 26.

“In advanced capitalism it expresses the fundamental contradiction between, on the one hand, the increasing socialisation of consumption, and on the other hand, the capitalist logic of the production and distribution of its means of consumption, the outcome of which is a deepening crisis in this sector at the same time as popular protest demands an amelioration of the collective material conditions of daily existence. In an attempt to resolve these contradictions and their resulting conflicts, the state increasingly intervenes in the city; but, as an expression of a class society, the state in practice acts according to the relations of force between classes and social groups, generally in favour of the hegemonic fraction of the dominant classes.”

Manuel Castells (1942) Spanish sociologist (b.1942)

Source: City, Class and Power, 1978, p. 3

Time

“The functional validity of a working hypothesis is not a priori certain, because often it is initially based on intuition. However, logical deductions from such a hypothesis provide expectations (so called prognoses) as to the circumstances under which certain phenomena will appear in nature. Such a postulate or working hypothesis can then be substantiated by additional observations or by experiments especially arranged to test details. The value of the hypothesis is strengthened if the observed facts fit the expectation within the limits of permissible error.”

Reinout Willem van Bemmelen (1904–1983) Dutch geologist

Source: "The Scientific Character of Geology," 1961, p. 454; As cited in: Alberta Research Council, ‎Research Council of Alberta (1964), Bulletin - Alberta Research Council. Vol. 15-17, p. 31

Error , Nature , Appearance

“You can be totally rational with a machine. But if you work with people, sometimes logic often has to take a backseat to understanding.”

Akio Morita (1921–1999) Japanese businessman

Source: Made in Japan (1986), p. 202.

People , Understanding

“The justification of slavery is placed, so far as I know, mainly upon these grounds. The inferiority of the enslaved race, the fact that enslaving men imparts Christianity and civilization to them, and thirdly, the guarantees of the Constitution. These are the three main arguments presented to justify slavery, and consequently to justify its expansion, and by the way, I hold that the extreme men, as they are called, on this question, are the only men who have the logic of it. I am right or the fire-eaters or right. If slavery is right in Virginia, it is right in Kansas. If it is wrong in Kansas, it is wrong everywhere.”

Owen Lovejoy (1811–1864) American politician

As quoted in His Brother's Blood: Speeches and Writings, 1838–64 https://books.google.com/books?id=qMEv8DNXVbIC&pg=PA193&lpg=PA193 (2004), edited by William Frederick Moore and Jane Ann Moore, p. 193
1860s, Speech to the U.S. House of Representatives (April 1860)

Men , Way , Question

“The most precise and complete formulation of the law of higher logic I find in the writing of Plotinus, in his On Intelligible Beauty. I shall quote this passage in the succeeding chapter.
I have called this system of higher logic Tertium Organum because for us it is the third canon — third instrument — of thought after those of Aristotle and Bacon. The first was Organon, the second, Novum Organum. But the third existed earlier than the first.
Man, master of this instrument, of this key, may open the door of the world of causes without fear.”

P. D. Ouspensky book Tertium Organum

Ch. XXI http://www.sacred-texts.com/eso/to/to24.htm#page_262
Tertium Organum (1912; 1922)

World , Fear , Law , Beauty

“The real world with its common logic pushes us toward catastrophe. The artists seek in his work to free himself from this weight. Art is being transformed into politics, love into trade, education into an apparatus for stifling the mind. In the midst of such horrors, clearly only the dream within me has life. But how do other people live? -There is color, virginal expression - new, without a cage, without routine, without limit, a bath of sun and light. We must realize that nothing man does is of any value. The trouble is that people want to be paid. Only sick men can be artists. Their suffering pushes them into the accomplishment of deeds which reinvest the world with meaning. The sensitive man or the artist can only be a sick man in our civilized life, so full of lies. To think of art as a profession, how appealing!”

Bram van Velde (1895–1981) Dutch painter

Painting is man in the face of his downfall.
1960's
Source: Abstract Painting, Michel Seuphor, Dell Publishing Co., 1964, p. 134

Love , Life , Men , People

“When a community has sufficiently advanced so that its government begins to take on that of the nature of a republic, the processes of education become even more important, but the method is necessarily reversed. It is all the more necessary under a system of free government that the people should be enlightened, that they should be correctly informed, than it is under an absolute government that they should be ignorant. Under a republic the institutions of learning, while bound by the constitution and laws, are in no way subservient to the government. The principles which they enunciate do not depend for their authority upon whether they square with the wish of the ruling dynasty, but whether they square with the everlasting truth. Under these conditions the press, which had before been made an instrument for concealing or perverting the facts, must be made an instrument for their true representation and their sound and logical interpretation. From the position of a mere organ, constantly bound to servitude, public prints rise to a dignity, not only of independence, but of a great educational and enlightening factor. They attain new powers, which it is almost impossible to measure, and become charged with commensurate responsibilities.”

Calvin Coolidge (1872–1933) American politician, 30th president of the United States (in office from 1923 to 1929)

1920s, The Press Under a Free Government (1925)

People , Truth , Education , Law

“Schizophrenia--its nature, etiology, and the kind of therapy to use for it--remains one of the most puzzling of the mental illnesses. The theory of schizophrenia presented here is based on communications analysis, and specifically on the Theory of Logical Types. From this theory and from observations of schizophrenic patients is derived a description, and the necessary conditions for, a situation called the "double bind"--a situation in which no matter what a person does, he "can't win."”

Gregory Bateson (1904–1980) English anthropologist, social scientist, linguist, visual anthropologist, semiotician and cyberneticist

It is hypothesized that a person caught in the double bind may develop schizophrenic symptoms.
Gregory Bateson, Don D. Jackson, Jay Haley, and John Weakland (1956) " Towards a theory of Schizophrenia http://www.psychodyssey.net/wp-content/uploads/2012/05/TOWARD-A-THEORY-OF-SCHIZOPHRENIA-2.pdf" In: Behavioral Science (1956) Vol 1, nr.4, pp.251-254

Communication , Nature , Personality

“There is, however, in art another kind of external similarity which is founded on a fundamental truth. When there is a similarity of inner tendency in the whole moral and spiritual atmosphere, a similarity of ideals, at first closely pursued but later lost to sight, a similarity in the inner feeling of any one period to that of another, the logical result will be a revival of the external forms which served to express those inner feelings in an earlier age.”

Wassily Kandinsky (1866–1944) Russian painter

I. Kandinsky's introduction
1910 - 1915, Concerning the Spiritual in Art, 1911

Truth , Age , Art , Feeling

“I tell you, brother, I am not good from a clergyman's point of view. I know full well that, frankly speaking, prostitutes are bad, but I feel something human in them which makes me feel not the least scruple to associate with them; I see nothing very wrong in them... And now, as in other periods of decline of civilization, the corruption of society has turned upside down all relations of good and evil, and one falls back logically on the old saying: "The first shall be last and the last shall be first."”

Vincent Van Gogh (1853–1890) Dutch post-Impressionist painter (1853-1890)

Quote in his letter to brother Theo, from Drenthe, The Netherlands, Sept. 1883; as quoted in Vincent van Gogh, edited by Alfred H. Barr; Museum of Modern Art, New York, 1935 https://www.moma.org/documents/moma_catalogue_1996_300061887.pdf, (letter 326) p. 38
Vincent is referring to his former relation with Sien, in The Hague
1880s, 1883

Feeling , Evil

“Unlike Hegel’s progress model of history, which moves by stages, each containing its own logic of growth and decline, the economic model develops as the simple function of one money-variable over time, with a long-term trend which increases monotonically.”

John Carroll (1944) Australian professor and author

Source: Break-Out from the Crystal Palace (1974), p. 168

Money , History , Time

“…we are in a logic of simulation, which no longer has anything to do with a logic of facts and an order of reason. Simulation is characterized by a precession of the model, of all the models based on the merest fact - the models come first, their circulation, orbital like that of the bomb, constitutes the genuine magnetic field of the event. The facts no longer have a specific trajectory, they are born at the intersection of models, a single fact can be engendered by all the models at once.”

Jean Baudrillard (1929–2007) French sociologist and philosopher

"The Precession of Simulcra,MÖBIUS - SPIRALING NEGATIVETY
1980s, Simulacra and Simulation (1981)

“Darwinian social theory gives us a glimpse of an underlying symmetry and logic in social relationships which, when more fully comprehended by ourselves, should revitalize our political understanding and provide the intellectual support for a science and medicine of psychology. In the process it should also give us a deeper understanding of the many roots of our suffering.”

Robert Trivers (1943) American evolutionary biologist and sociobiologist

Foreword to The Selfish Gene by Richard Dawkins (1976)

Understanding , Support , Suffering , Science

“I once had to dispense with a literary agent because she drank too much. She was very surprised but I pointed out to her, quite logically I thought, that one of us had to be sober and it certainly wan't going to be me.”

Jeffrey Bernard (1932–1997) British journalist

Ibid. (29.10.88)

“In mathematics, logic, linguistics, and other abstract disciplines, the systems are not assigned to objects. They are defined by an enumeration of the variables, their admissible values, and their algebraic, topological, grammatical, and other properties which, in the given case, determine the relations between the variables under consideration.”

George Klir (1932–2016) American computer scientist

Source: An approach to general systems theory (1969), p. 40.

Mathematics

“In Barnette, we held that a public school student could not be compelled to recite the Pledge; we did not even hint that she could not be compelled to observe respectful silence.... Logically, that ought to be the next target for the Court's bulldozer.”

Antonin Scalia (1936–2016) former Associate Justice of the Supreme Court of the United States

On the Pledge of Allegiance: Lee v. Weisman (1992) (dissenting).
1990s

School , Silence

“At one time, tips were given only for things you logically would want to have done efficiently and promptly, and they served to supplement a lower payscale for certain classes of employment. This was understood, accepted. It was tourism, back in the century of my birth, cluing in the underdeveloped countries to the fact that all tourists are marks, that set the precedent, which then spread to all countries, even back to the tourists’ own, of the benefits which might be gained by those who wear uniforms and render the undesired and the unrequested with a smile. This is the army that conquered the world. After their quiet revolution in the twentieth century, we all became tourists the minute we set foot outside our front doors, second-class citizens, to be ruthlessly exploited by the smiling legions who had taken over, slyly, completely.”

Roger Zelazny Isle of the Dead

Source: Isle of the Dead (1969), Chapter 2 (p. 45)

World , Smile , Birth , Time

“The main objection to the theory of pure visualization is our thesis that the non-Euclidean axioms can be visualized just as rigorously if we adjust the concept of congruence. This thesis is based on the discovery that the normative function of visualization is not of visual but of logical origin and that the intuitive acceptance of certain axioms is based on conditions from which they follow logically, and which have previously been smuggled into the images. The axiom that the straight line is the shortest distance is highly intuitive only because we have adapted the concept of straightness to the system of Eucidean concepts. It is therefore necessary merely to change these conditions to gain a correspondingly intuitive and clear insight into different sets of axioms; this recognition strikes at the root of the intuitive priority of Euclidean geometry. Our solution of the problem is a denial of pure visualization, inasmuch as it denies to visualization a special extralogical compulsion and points out the purely logical and nonintuitive origin of the normative function. Since it asserts, however, the possibility of a visual representation of all geometries, it could be understood as an extension of pure visualization to all geometries. In that case the predicate "pure" is but an empty addition, since it denotes only the difference between experienced and imagined pictures, and we shall therefore discard the term "pure visualization."”

Hans Reichenbach (1891–1953) American philosopher

Instead we shall speak of the normative function of the thinking process, which can guide the pictorial elements of thinking into any logically permissible structure.
The Philosophy of Space and Time (1928, tr. 1957)

Imagination , Problem , Thinking , Change

“To make psychology into experimental epistemology is to attempt to understand the embodiment of mind. Here we are confronted by what seem to be three questions, although they may ultimately be only one. The three exist as categorically disperate desiderata.
The first is at the logical level: We lack an adequate, appropriate calculus for triadic relations.
The second is the psychological level: We do not know how we generate hypotheses that are natural and simple.
The third is that the physiological level: we have no circuit theory for the reticular formation that marshals our abductions.
Logically, the problem is far from simple. To be exact, no proposed theory of relations yields a calculus to handle our problem. When I was growing up, only the Aristotelian logic of classes was ever taught, and that badly. The Organon itself contains only a clumsy description of the apagoge - perhaps from the notes of some students who have not understand his master…”

Warren S. McCulloch (1898–1969) American neuroscientist

Source: Embodiments of Mind, (1965), p. 389, Chapter " What's in the brain that ink may character http://vordenker.de/ggphilosophy/mcculloch_whats-in-the-brain.pdf"

Understanding , Question , Nature , Problem

“The methods of logical procedure are very different in ancient and modem logic, but behind all difference is the construction of a universally valid order of thought, neutral with respect to material content. Long before technological man and technological nature emerged as the objects of rational control and calculation, the mind was made susceptible to abstract generalization. Terms which could be organized into a coherent logical system, free from contradiction or with manageable contradiction, were separated from those which could not. Distinction was made between the universal, calculable, “objective” and the particular, incalculable, subjective dimension of thought.”

Herbert Marcuse book One-Dimensional Man

Source: One-Dimensional Man (1964), pp. 137-138

Nature , Universe

“Those philosophers who believe in the absolute logic of truth have never had to discuss it on close terms with a woman.”

Cesare Pavese (1908–1950) Italian poet, novelist, literary critic, and translator

This Business of Living (1935-1950)

Truth

“Pure mathematics is a collection of hypothetical, deductive theories, each consisting of a definite system of primitive, undefined, concepts or symbols and primitive, unproved, but self-consistent assumptions (commonly called axioms) together with their logically deducible consequences following by rigidly deductive processes without appeal to intuition.”

Joshua Girling Fitch (1824–1903) British educationalist

The Fourth Dimension simply Explained. (New York, 1910), p. 58. Reported in Moritz (1914); Also cited in: Howard Eves (2012), Foundations and Fundamental Concepts of Mathematics, p. 167

Mathematics

“There is a battle shaping up in the world – a battle between the forces of archy – of statism, of political rule and authority – and its only alternative – anarchy, the absence of political rule. This battle is the necessary and logical consequence of the battle between individualism and collectivism, between liberty and the state, between freedom and slavery.”

Roy A. Childs, Jr. (1949–1992) American libertarian essayist and critic

“Objectivism and the State: An Open Letter to Ayn Rand,” 1969

World , Freedom

“There has always been a temptation to classify economic goods in clearly defined groups, about which a number of short and sharp propositions could be made, to gratify at once the student’s desire for logical precision, and the popular liking for dogmas that have the air of being profound and are yet easily handled. But great mischief seems to have been done by yielding to this temptation, and drawing broad artificial lines of division where Nature has made none. The more simple and absolute an economic doctrine is, the greater will be the confusion which it brings into attempts to apply economic doctrines to practice, if the dividing lines to which it refers cannot be found in real life. There is not in real life a clear line of division between things that are and are not Capital, or that are and are not Necessaries, or again between labour that is and is not Productive.”

Alfred Marshall book Principles of Economics

Source: Principles of Economics, (1890), p. viii (9th ed. 2009).

Life , Nature , Drawing

“If goods and services become more valuable as they become more plentiful, and if they become cheaper as they become valuable, then the natural extension of this logic says that the most valuable things of all should be those that are ubiquitous and free.”

Kevin Kelly (1952) American author and editor

Out of Control: The New Biology of Machines, Social Systems and the Economic World (1995), New Rules for the New Economy: 10 Radical Strategies for a Connected World (1999)

Nature

Quotes about logic page 5

Quotes about logic
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