Quotes about logic
page 10

William Lloyd Garrison photo
Henri Poincaré photo

“Logic teaches us that on such and such a road we are sure of not meeting an obstacle; it does not tell us which is the road that leads to the desired end. For this, it is necessary to see the end from afar, and the faculty which teaches us to see is intuition. Without it, the geometrician would be like a writer well up in grammar but destitute of ideas.”

La logique nous apprend que sur tel ou tel chemin nous sommes sûrs de ne pas rencontrer d'obstacle ; elle ne nous dit pas quel est celui qui mène au but. Pour cela il faut voir le but de loin, et la faculté qui nous apprend à voir, c'est l'intuition. Sans elle, le géomètre serait comme un écrivain qui serait ferré sur la grammaire, mais qui n'aurait pas d'idées.
Part II. Ch. 2 : Mathematical Definitions and Education, p. 130
Science and Method (1908)

Robert Hayden photo
Mahmoud Ahmadinejad photo

“We are confident that the Islamic logic, culture, and discourse can prove their superiority in all fields over all schools of thought and theories.”

Mahmoud Ahmadinejad (1956) 6th President of the Islamic Republic of Iran

Ahmadinejad on His Proposal for a Jewish State in Europe and on Iran's Nuclear Energy http://www.memritv.org/Transcript.asp?P1=987 Jan. 2006.
2006

Frank Wilczek photo
Tristan Tzara photo
Roman Polanski photo

“If you have a great passion it seems that the logical thing is to see the fruit of it, and the fruit are children.”

Roman Polanski (1933) Polish-French film director, producer, writer, actor, and rapist

The Independent (12 May 1991)

Orson Scott Card photo

“Boys always argued as if they knew then had the forces of logic on their side, even when they were being completely irrational.”

Orson Scott Card (1951) American science fiction novelist

Homecoming saga, Earthborn (1995)

Adam Roberts photo
Tim Jackson photo
Keeanga-Yamahtta Taylor photo

“Let’s set a precedent and try to approach this thing logically.”

T. A. Waters (1938–1998) American magician

Source: The Probability Pad (1970), Chapter 2 (p. 20)

A. J. Muste photo
Heinz Isler photo

“[Architects and engineers] must be willing to subordinate themselves to the emerging logic of the shell’s form as it evolves through experimentation.”

Heinz Isler (1926–2009) engineer

“New Shapes for Shells.” (1960) Bulletin of the International Association for Shell Structures, no.8, Paper C-3, taken from Tessa Maurer, Elizabeth O'Grady, Ellen Tung, "Inverse Hanging Membrane: Naturtheater Grötzingen" http://shells.princeton.edu/Grotz.html ( 2013) Evolution of German Shells Forms: Efficiency of Form, Princeton University Dept. Civil and Environmental Engineering.

E. W. Hobson photo
Arthur Rubinstein photo

“My father, good or bad, mistakes or no, had a direct line from his heart to the music to the people, to the audience. He played with logic and his own inner truth.”

Arthur Rubinstein (1887–1982) Polish-American classical pianist

John Rubinstein — reported in Kevin Kelly (February 22, 1981) "Rubinstein a Chip Off Rubinstein: John Says His Father's Music Shaped His Approach to Acting", Boston Globe.
About

Will Eisner photo

“I have had considerable experience in dealing with minds of low logical power, and have found that studies may be made so easy and mechanical as to render thought almost superfluous.”

Criticising Charles Dodgson's Notes on the First Two Books of Euclid, quoted in Robin Wilson, Lewis Carroll in Numberland (2008) p. 87

William Moulton Marston photo

“If, as psychologists, we follow the analogy of the other biological sciences, we must expect to find normalcy synonymous with maximal efficiency of function. Survival of the fittest means survival of those members of a species whose organisms most successfully resist the encroachments of environmental antagonists, and continue to function with the greatest internal harmony. In the field of emotions, then, why would we alter this expectation? Why should we seek the spectacularly disharmonious emotions, the feelings that reveal a crushing of ourselves by environment, and consider these affective responses as our normal emotions? If a jungle beast is torn and wounded during the course of an ultimately victorious battle, it would be a spurious logic indeed that attributed its victory to its wounds. If a human being be emotionally torn and mentally disorganized by fear or rage during a business battle from which, ultimately, he emerges victorious, it seems equally nonsensical to ascribe his conquering strength to those emotions symptomatic of his temporary weakness and defeat. Victory comes in proportion as fear is banished. Perhaps the battle may be won with some fear still handicapping the victor, but that only means that the winner's maximal strength was not required.”

William Moulton Marston (1893–1947) American psychologist, lawyer, inventor and comic book writer

Source: The Emotions of Normal People (1928), p.2

Max Horkheimer photo
H.L. Mencken photo
Mitt Romney photo
James Clapper photo

“Of course, the Russian effort affected the outcome. Surprising even themselves, they swung the election to a Trump win. To conclude otherwise stretches logic, common sense, and credulity to the breaking point.”

James Clapper (1941) US government official

Excerpt from Clapper's memoir Facts And Fears, quoted in [Hains, Tim, James Clapper in New Book: "Of Course" The Russians "Swung The Election To A Trump Win", https://www.realclearpolitics.com/video/2018/05/23/james_clapper_in_new_book_of_course_the_russians_swung_the_election_to_a_trump_win.html, 27 July 2018, Real Clear Politics, May 23, 2018]

Eugéne Ionesco photo

“I didn't mean you were stupid. It's just that you're not logical, which isn't the same thing at all.”

Eugéne Ionesco (1909–1994) Romanian playwright

Amédée from Amédée or How to Get Rid of It (1954)

Paul Sérusier photo

“[.. according to Gauguin ] the impression of nature must be wedded to the aesthetic sentiment which chooses, arranges, simplifies and synthesizes. The painter ought not to rest until he has given birth to the child of his imagination.... begotten in a union of his mind with reality. Gauguin insisted on a logical construction of composition, on a harmonious apportionment of light and dark colors, the simplification of forms and proportions, so as to endow the outline's of forms with a powerful and eloquent expression.... He also insisted upon luminous and pure colors.”

Paul Sérusier (1864–1927) French painter

Paul Sérusier's quote in 1888, about Paul Gauguin; in Pierre Bonnard, John Rewald; MoMA - distribution, Simon & Schuster, New York, 1918, p. 13
Sérusier encountered in his summer vacation in Pont-Aven in Brittany [Summer 1888], briefly Paul Gauguin. He also made there a small landscape, painted under Gauguin's direction. Back in Paris, October 1888, Sérusier explained his Nabis friends (Denis, Pierre Bonnard and Vuillard) the artistic lessons Paul Gauguin taught him - as reported by John Rewald in his book Pierre Bonnard, p. 13-14

Sun Myung Moon photo

“A God who fits within the confines of our conception is useless. God cannot be comprehended by man's conception or logic. God is an eternal being who transcends the framework of man's limited logic.”

Sun Myung Moon (1920–2012) Korean religious leader

The Way of God's Will Chapter 2-1 God's Words http://www.unification.org/ucbooks/WofGW/wogw2-01.htm Translated 1980.

Lucio Russo photo

“The function of logic in mathematics is critical rather than constructive.”

George Frederick James Temple (1901–1992) British mathematician

100 Years of Mathematics: a Personal Viewpoint (1981)

Étienne Bonnot de Condillac photo

“We shall not … begin this logic by definitions, axioms, or principles; we shall begin by observing the lessons which nature gives us.”

Étienne Bonnot de Condillac (1714–1780) French academic

The Logic of Condillac (trans. Joseph Neef, 1809), "Of the Method of Thinking", p. 3.

William Styron photo
Mario Bunge photo
Eric R. Kandel photo
Ornette Coleman photo
Jerzy Vetulani photo
George Boole photo
Frederick Douglass photo

“The American people and the Government at Washington may refuse to recognize it for a time but the inexorable logic of events will force it upon them in the end; that the war now being waged in this land is a war for and against slavery.”

Frederick Douglass (1818–1895) American social reformer, orator, writer and statesman

On the American Civil War (1861); as quoted in Afro-American Writing: An Anthology of Prose and Poetry http://books.google.com/books?id=qPW8i99nuvEC&printsec=frontcover#v=onepage&q&f=false, by Richard A. Long.
1860s

Noam Chomsky photo
Derren Brown photo
Deendayal Upadhyaya photo

“Large-scale riots in East Pakistan have compelled over two lakh Hindus and other minorities to come over to India. Indians naturally feel incensed by the happenings in East Bengal. To bring the situation under control and to prescribe the right remedy for the situation it is essential that the malady be properly diagnosed. And even in this state of mental agony, the basic values of our national life must never be forgotten. It is our firm conviction that guaranteeing the protection of the life and property of Hindus and other minorities in Pakistan is the responsibility of the Government of India. To take a nice legalistic view about the matter that Hindus in Pakistan are Pakistani nationals would be dangerous and can only result in killings and reprisals in the two countries, in greater or lesser measure. When the Government of India fails to fulfill this obligation towards the minorities in Pakistan, the people understandably become indignant. Our appeal to the people is that this indignation should be directed against the Government and should in no case be given vent to against the Indian Muslims. If the latter thing happens, it only provides the Government with a cloak to cover its own inertia and failure, and an opportunity to malign the people and repress them. So far as the Indian Muslims are concerned, it is our definite view that, like all other citizens, their life and property must be protected in all circumstances. No incident and no logic can justify any compromise with truth in this regard. A state, which cannot guarantee the right of living to its citizens, and citizens who cannot assure safety of their neighbours, would belong to the barbaric age. Freedom and security to every citizen irrespective of his faith has indeed been India’s sacred tradition. We would like to reassure every Indian Muslim in this regard and would wish this message to reach every Hindu home that it is their civic and national duty to ensure the fulfillment of this assurance.”

Deendayal Upadhyaya (1916–1968) RSS thinker and co-founder of the political party Bharatiya Jana Sangh

Joint statement for the Indo-Pak confederation that D Upadhyaya signed, on 12 April 1964, with Dr Lohia, quoted in L.K. Advani, My Country My Life (2008)

Hannah Arendt photo

“There is a rigorous science, just waiting to be recognized and developed, which encompasses the whole of 'the software problem,' as defined, including the hardware, software, languages, devices, logic, data, knowledge, users, users, and effectiveness, etc. for end-users, providers, enablers, commissioners, and sponsors, alike.”

Douglas T. Ross (1929–2007) American computer scientist

D.T. Ross (1989) "Appendix B: Understanding: The Key to Software" in: Computer Science and Telecommunications Board, National Research Council Scaling Up: A Research Agenda for Software Engineering. p. 66 (cited on p. 3).

David Brin photo

“He tried again, but their sullen, rural obstinacy was impervious to logic.”

Source: The Postman (1985), Section 2, “Cyclops”, Chapter 4, “Harrisburg” (p. 126)

Jean Sibelius photo

“If we understood the world, we would realize that there is a logic of harmony underlying its manifold apparent dissonances.”

Jean Sibelius (1865–1957) Finnish composer of the late Romantic period

Henry Thomas & Dana Lee Thomas Living Biographies of Great Composers (Garden City (NY): Blue Ribbon, [1940] 1946) p. 309.
Said in 1907, in conversation with Gustav Mahler.

“The rule is derived inductively from experience, therefore does not have any inner necessity, is always valid only for special cases and can anytime be refuted by opposite facts. On the contrary, the law is a logical relation between conceptual constructions; it is therefore deductible from upper [übergeordnete] laws and enables the derivation of lower laws; it has as such a logical necessity in concordance with its upper premises; it is not a mere statement of probability, but has a compelling, apodictic logical value once its premises are accepted”

Ludwig von Bertalanffy (1901–1972) austrian biologist and philosopher

Source: 1920s, Kritische Theorie der Formbildung (1928, 1933), p. 91; as cited in: M. Drack, W. Apfalter, D. Pouvreau (2007) " On the making of a system theory of life: Paul A Weiss and Ludwig von Bertalanffy's conceptual connection http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2874664/". in: Q Rev Biol. 2007 December; 82(4): 349–373.

Alfred de Zayas photo
Baruch Spinoza photo
Douglas Hofstadter photo

“This type of paradox is quite characteristic of Zen. It is an attempt to "break the mind of logic."”

This statement refers to a koan
Gödel, Escher, Bach: an Eternal Golden Braid (1979)

H. G. Wells photo

“Suppose, now, there is such a thing as an all-round inferior race. Is that any reason why we should propose to preserve it for ever…? Whether there is a race so inferior I do not know, but certainly there is no race so superior as to be trusted with human charges. The true answer to Aristotle’s plea for slavery, that there are “natural slaves,” lies in the fact that there are no “natural” masters… The true objection to slavery is not that it is unjust to the inferior but that it corrupts the superior. There is only one sane and logical thing to be done with a really inferior race, and that is to exterminate it. Now there are various ways of exterminating a race, and most of them are cruel. You may end it with fire and sword after the old Hebrew fashion; you may enslave it and work it to death, as the Spaniards did the Caribs; you may set it boundaries and then poison it slowly with deleterious commodities, as the Americans do with most of their Indians; you may incite it to wear clothing to which it is not accustomed and to live under new and strange conditions that will expose it to infectious diseases to which you yourselves are immune, as the missionaries do the Polynesians; you may resort to honest simple murder, as we English did with the Tasmanians; or you can maintain such conditions as conduce to “race suicide,” as the British administration does in Fiji. Suppose, then, for a moment, that there is an all-round inferior race… If any of the race did, after all, prove to be fit to survive, they would survive—they would be picked out with a sure and automatic justice from the over-ready condemnation of all their kind. Is there, however, an all-round inferior race in the world? Even the Australian black-fellow is, perhaps, not quite so entirely eligible for extinction as a good, wholesome, horse-racing, sheep-farming Australian white may think. These queer little races, the black-fellows, the Pigmies, the Bushmen, may have their little gifts, a greater keenness, a greater fineness of this sense or that, a quaintness of the imagination or what not, that may serve as their little unique addition to the totality of our Utopian civilisation. We are supposing that every individual alive on earth is alive in Utopia, and so all the surviving “black-fellows” are there. Every one of them in Utopia has had what none have had on earth, a fair education and fair treatment, justice, and opportunity…Some may be even prosperous and admired, may have married women of their own or some other race, and so may be transmitting that distinctive thin thread of excellence, to take its due place in the great synthesis of the future.”

Source: A Modern Utopia (1905), Ch. 10, sect. 3

El Lissitsky photo
Raymond Poincaré photo

“The annual payment [of German reparations] will very likely spread over some thirty years at least. It would therefore be fair and logical for the military occupation of the left bank of the Rhine and the bridgeheads to last for the same length of time…There is, moreover, something quite unusual in the idea of renouncing a security before the amount secured has been completely paid…After the war of 1870, the Germans occupied various French provinces until they received the last centime of the indemnity imposed on France…It is argued that even when the occupation ceased, it could be resumed in the event of non-payment. This option to renew occupation may look tempting to-day on paper. But its bristling with drawbacks and risk. Let us imagine ourselves sixteen or seventeen years ahead. Germany has paid regularly for fifteen years. We have evacuated the whole left bank of the Rhine. We have returned to our side of the political frontiers which afford no military security. Imagine Germany again prey to Imperialism or imagine that she simply breaks faith. She suspends payment and we are obliged to reoccupy. We give the necessary orders, but who will vouch for our being able to carry them out without difficulty?”

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

Memorandum to Clemenceau (28 April 1919), quoted in David Lloyd George, The Truth about the Peace Treaties. Volume I (London: Victor Gollancz, 1938), p. 428.

George Klir photo
Paul Thurrott photo
Michel Foucault photo
Glen Cook photo
George Holmes Howison photo
Alfred de Zayas photo

“Bearing in mind that “the market” is not an invention of capitalism but that it has existed for thousands of years in many different societies, social justice logically requires that the profits resulting from the operation of markets and infrastructures created by society be equitably shared within societies and in a larger context within the human family.”

Alfred de Zayas (1947) American United Nations official

Interim report of the Independent Expert on the promotion of a democratic and equitable international order, Alfred Maurice de Zayas http://www.ohchr.org/Documents/Issues/IntOrder/A.67.277_en.pdf.
2012

George Boole photo
Robert M. Pirsig photo
Christopher Hitchens photo
Philip K. Dick photo
Verghese Kurien photo
David Graeber photo
Steven Pinker photo
Eric R. Kandel photo
Michael Warner photo

“Logical rationality is neither subversive nor nonsubversive. It is simply a statement of fact.”

Source: They'd Rather Be Right (1954), pp. 17-18.

Charles Henry Fowler photo
Jacek Tylicki photo
Vladimir Lenin photo

“It is logical to assert that all matter possesses a property which is essentially akin to sensation, the property of reflection.”

Vladimir Lenin (1870–1924) Russian politician, led the October Revolution

Collected Works, Vol. 14, pp. 17–362.
Collected Works

Sam Harris photo
William Makepeace Thackeray photo
Alfred de Zayas photo
Harsha of Kashmir photo
Mata Amritanandamayi photo
Georg Simmel photo
Ralph Nader photo
Jay Samit photo

“What's at the heart of all sales and marketing: creating demand even in the absence of logic.”

Jay Samit (1961) American businessman

Source: Disrupt You! (2015), p.169

Marianne Moore photo

“Precision, economy of statement, logic employed to ends that are disinterested … liberate the imagination.”

Marianne Moore (1887–1972) American poet and writer

Forward to Marianne Moore Reader 1961

Gerhard Richter photo
Thomas Henry Huxley photo

“Logical consequences are the scarecrows of fools and the beacons of wise men.”

Thomas Henry Huxley (1825–1895) English biologist and comparative anatomist

1870s, On the Hypothesis that Animals are Automata, and Its History (1874)

George William Curtis photo
Brooks D. Simpson photo
Joseph Campbell photo
Baba Hari Dass photo

“I am the logic of all arguments - Arguments are of three kinds:”

Baba Hari Dass (1923–2018) master yogi, author, builder, commentator of Indian spiritual tradition

1) jalpa (arrogant argument) – In this type of argument one tries to establish one's point of view by contradicting the opponent's argument without considering whether the opponent's argument is right or wrong.
2) vitanda (destructive criticism) – In this type of argument the person simply destroys the opponent's viewpoint by misleading argument.
3) vada (logical argument) – In this type of argument one uses a method of discussion with reasoning with an aim to find out what is truth and what is untruth. Reasoning is the best method of discussion to achieve the truth. This is why the Lord says, “Among arguments, I am vada or logical argument.”
Srimad Bhagavad Gita, Ch. VII-XII, 2014

“The history of the Democratic Party can be concisely captured by referring to its steadfast allegiance to the four Ss. Slavery, Secession, Segregation, and Socialism. During the Obama presidency we have seen how hard old habits die, even for a black man whose race was the long-time victim of Democratic Party's bone-deep authoritarianism. Under this Democratic president we have seen a war waged on several fronts against America's young. Indeed, the Democrats' historic taste for and belief in slavery have resurfaced with a vengeance and indiscriminately under the Obama administration, whether white, black, yellow, red, male, or female America's young are dying and being forced to work for Obama and his lieutenants as they seek to maintain their party's hold on political power. How so? Well, America has never had a president and administration so eager to kill unborn Americans. Even with post-1973 science having proved irrefutably that the unborn are human beings, and even though American law always has defined them as U. S. citizens, Obama and his colleagues have strengthened at every point they could the absurd notion that unborn humans are the chattel property of the woman who bears them, and so can be disposed of, that is, murdered, at her whim. And, in what must be considered a masterpiece of Orwellian language, Obama and his team, and most Democrats since 1973, describe this federal government-issued license to kill as a woman's 'right', a means by which she manifests her equality with men. They then damn any one who questions the logic, sanity, or justice of this argument as an 'extremist'. Only in an America in which a political entity as devoted to the four 'Ss' as the Democratic Party could opposition to the cold-blooded murder of fellow citizens unable defend themselves be identified by the country’s best-educated as 'extremism'. If this is indeed a right, it is a right gives each woman the right to be a slave-owner and a Nazi. Such a 'right' really is no different than the rights sanctioned by the Dred Scott decision and the Nuremberg laws, each of which legally defined certain categories of people out of the human race in order to enslave or kill them. Since 1973, the application of this 'right' has produced precisely the same results as Dred Scott and the Nuremberg laws, though in numbers so immense, 55 million and climbing, that they make those acts seem rather tame and minimally destructive of humans.”

Michael Scheuer (1952) American counterterrorism analyst

As quoted in "Obama and his party offer America's young … death, misery, and slavery" http://non-intervention.com/1143/obama-and-his-party-offer-america%E2%80%99s-young-%E2%80%A6-death-misery-and-slavery/ (21 November 2013), by M. Scheuer, Michael Scheuer's Non-Intervention.
2010s

R. G. Collingwood photo