Quotes about theory (2998 quotes, page 23)

“Only empirical work - analysis based on observation and experience as opposed to theory - can answer the question of how labor force behavior is affected by changes in the tax system. Even intense armchair speculation on this matter must be regarded with considerable skepticism.”

Harvey S. Rosen (1949) American economist

Source: Public Finance - International Edition - Sixth Edition, Chapter 2, Tools of Positive Analysis, p. 22

Behavior , Question , Change

“We must… maintain that mathematical geometry is not a science of space insofar as we understand by space a visual structure that can be filled with objects - it is a pure theory of manifolds.”

Hans Reichenbach (1891–1953) American philosopher

The Philosophy of Space and Time (1928, tr. 1957)

Mathematics , Understanding , Science

“Contemporary theories of politics tend to portray politics as a reflection of society, political phenomena as the aggregate consequences of individual behavior, action as the result of choices based on calculated self-interest, history as efficient in reaching unique and appropriate outcomes, and decision making and the allocation of resources as the central foci of political life. Some recent theoretical thought in political science, however, blends elements of these theoretical styles into an older concern with institutions. This new institutionalism emphasizes the relative autonomy of political institutions, possibilities for inefficiency in history, and the importance of symbolic action to an understanding of politics. Such ideas have a reasonable empirical basis, but they are not characterized by powerful theoretical forms. Some directions for theoretical research may, however, be identified in institutionalist conceptions of political order.”

Johan Olsen (1939) Norwegian political scientist

James G. March and Johan P. Olsen. "The new institutionalism: organizational factors in political life." American political science review 78.03 (1983): 734-749; Abstract.

Life , Behavior , History , Idea

“Without an understanding of causality there can be no theory of communication. What passes as information theory today is not communication at all, but merely transportation.”

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

Source: 1990s and beyond, The Book of Probes : Marshall McLuhan (2011), p. 362

Communication , Understanding

“In the astronomical and physical division of the work, will be found a general rule for determining the correction on account of aberration; a comparison of observations on the; formulae for finding the heat of summer and winter; remarks on the theory of the winds; and a comparative table of all the mechanical properties of a variety of natural bodies.”

Thomas Young (scientist) (1773–1829) English polymath

Preface, p. x
A Course of Lectures on Natural Philosophy and the Mechanical Arts (1807)

Nature , Winter , Summer

“A nonlinear differential equation of the Riccati type is derived for the covariance matrix of the optimal filtering error. The solution of this 'variance equation' completely specifies the optimal filter for either finite or infinite smoothing intervals and stationary or non-stationary statistics.
The variance equation is closely related to the Hamiltonian (canonical) differential equations of the calculus of variations. Analytic solutions are available in some cases. The significance of the variance equation is illustrated by examples which duplicate, simplify, or extend earlier results in this field.
The duality principle relating stochastic estimation and deterministic control problems plays an important role in the proof of theoretical results. In several examples, the estimation problem and its dual are discussed side-by-side.
Properties of the variance equation are of great interest in the theory of adaptive systems. Some aspects of this are considered briefly.”

Rudolf E. Kálmán (1930–2016) Hungarian-born American electrical engineer

Source: New results in linear filtering and prediction theory (1961), p. 95 Article summary; cited in: " Rudolf E. Kálmán http://www-history.mcs.st-andrews.ac.uk/Biographies/Kalman.html", MacTutor History of Mathematics archive, 2010

Error , Optimism , Problem

“This article [entitled A framework for the comparative analysis of organizations], was one of three independent statements in 1967 of what came to be called "contingency theory." It held that the structure of an organization depends upon (is ‘contingent’ upon) the kind of task performed, rather than upon some universal principles that apply to all organizations. The notion was in the wind at the time.
I think we were all convinced we had a breakthrough, and in some respects we did — there was no one best way of organizing; bureaucracy was efficient for some tasks and inefficient for others; top managers tried to organize departments (research, production) in the same way when they should have different structures; organizational comparisons of goals, output, morale, growth, etc., should control for types of technologies; and so on. While my formulation grew out of fieldwork, my subsequent research offered only modest support for it. I learned that managers had other ends to maximize than efficient production and they sometimes sacrificed efficiency for political and personal ends.”

Charles Perrow (1925–2019) American sociologist

Charles Perrow, in "This Week’s Citation Classic." in: CC, Nr. 14. April 6, 1981 (online at garfield.library.upenn.edu)
Comment:
The other two 1967 publications were Paul R. Lawrence & Jay W. Lorsch. Organization and environment. Cambridge, MA: Harvard University Press, 1967, and James D. Thompson. Organizations in action. New York: McGraw-Hill, 1967.
1980s and later

Way , Support , Thinking , Learning

“Before the Flood came, all the people and all the animals were vegetarian. Some say that some animals today cannot live without meat. During World War II, the zoo in London, England, had no meat to feed the lions so they fed them cabbage and other vegetables. They did fine. For years, Hollywood moviemakers used a lion called Little Tyke that refused to eat meat. In the 4,400 years since that Flood, some animals’ digestive tracts may have “adapted” to an all-meat diet, making it difficult or maybe even impossible to go back to a vegetarian diet, but that is not real evolution. Going from a plant-eating lion to a meat-eating lion is a minor change, compared to the evolution theory, which says they changed from a rock to a lion!”

Kent Hovind (1953) American young Earth creationist

Slowly of course! Unless you are from Harvard
Source: What On Earth Is About To Happen… For Heaven’s Sake? (2013), p. 47-48

War , People , World , Change

“While economic theory in general may be defined as the theory of how an economic condition or an economic development is determined within an institutional framework, the welfare theory deals with how to judge whether one condition can be said to be better in some way than another and whether it is possible, by altering the institutional framework, to achieve a better condition than the present one.”

Kenneth Arrow (1921–2017) American economist

Arrow and Hicks (1972) From Nobel Lectures, Economics 1969-1980, Editor Assar Lindbeck, World Scientific Publishing Co., Singapore, 1992 ( online http://www.nobelprize.org/nobel_prizes/economics/laureates/1972/presentation-speech.html)
1970s-1980s

Way

“The part assigned to this country in the 'Good Fight of Man' is the total overthrow of the spirit of caste. Luther fought it in the form of ecclesiastical despotism; our fathers fought it as political tyranny; we have hitherto encountered it entrenched in a system of personal slavery. But in all these forms it is the same old spirit of the denial of equal rights. Martin Luther, the monk, had exactly the same right to his religious faith that Giovanni de' Medici, the pope, had to his. Galileo had the same right to hold and teach his scientific theories that the Church doctors had to teach theirs. Patrick Henry, a British subject, had the same right to refuse to be taxed without representation that Lord North, another British subject, had. Robert Small, one of the American people, had exactly the same right to vote upon the same qualifications with other citizens that the President has or the Chief Justice of the United States. The Inquisition in Italy, aristocratic privilege in England, chattel slavery or unfair political exclusion in the United States, are only fruits ripened upon the tree of caste. Our swords have cut off some of the fruit, but the tree and its roots remain, and now that our swords are turned into plough-shares and our Dahlgrens and Parrotts into axes and hoes, our business is to take care that the tree and all its roots are thoroughly cut down and dug up, and burned utterly away in the great blaze of equal rights.”

George William Curtis (1824–1892) American writer

1860s, The Good Fight (1865)

People , Faith , Justice , Business

“A science fiction writer is—or should be—constrained by what is, or logically might be. That can mean simple fidelity to facts (which, in science, are always more important than theories—though Lord knows the two help shape each other, undermining the convenient, complacent separation of observer and observed). To me it also means heeding the authentic, the actual and concrete. Bad fiction uses the glossy generality; good writing needs the smattering of detail, the unrelenting busy mystery of the real.”

Gregory Benford (1941) Science fiction author and astrophysicist

Afterword to Exposures, p. 246
In Alien Flesh (1986)

Business , Science , Help

“The doctrine of human dignity says that humans merit a level of moral concern wholly different from that accorded to mere animals; for this to be true, there would have to be some big, morally significant difference between them. Therefore, any adequate defense of human dignity would require some conception of human beings as radically different from other animals. But that is precisely what evolutionary theory calls into question. It makes us suspicious of any doctrine that sees large gaps of any sort between humans and all other creatures. This being so, a Darwinian may conclude that a successful defense of human dignity is most unlikely.”

James Rachels (1941–2003) American philosopher

Created from Animals (1990), p. 172

Question , Success , Animals

“In quantum theory, distance is inverse to energy, because you need particles of very high energy to probe very short distances. The inverse of the Planck energy is the Planck length.”

Lee Smolin (1955) American cosmologist

"Loop Quantum Gravity," The New Humanists: Science at the Edge (2003)

“What makes a leftist a leftist is not this or that theory but his ability to integrate any theory into the kitsch called the Grand March.”

Milan Kundera book The Unbearable Lightness of Being

The Unbearable Lightness of Being (1984), Part Five: Lightness and Weight

“Those of us who are sympathetic to Kantian ethics usually are so because we regard it as an ethics of autonomy, based on respect for the human capacity to govern our own lives according to rational principles. Kantian ethical theory is grounded on the idea that the moral law is binding on me only because it is regarded as proceeding from my own will.”

Allen W. Wood (1942) academic

Kantian Ethics (2008)

Law , Idea

“John Maynard Keynes may have had more influence on policy makers, Milton Friedman on citizens, Kenneth Arrow on economic theory, but Samuelson had more influence on the way economics is done today, and the purposes to which it is put, than any other economist of the twentieth century.”

David Warsh (1944) American journalist

David Warsh, "The Enormous Black Box" http://www.economicprincipals.com/issues/2009.12.13/841.html (2009)

Way

“It seems, in theory, that I should be able to control at least a few of my bad habits. The problem is that my habits make me depressed, and the depression makes me want to indulge my habits and so I do. There isn't any solution to this.”

John S. Hall (1960) Poet, author, singer, lawyer

May 23
Quotes from Daily Negations (2007)

Problem

“We must move toward a soundly based and widely distributed economic well-being. This is the 'theory of plenty' as distinguished from the 'theory of scarcity' which has dominated our recent economic thinking and politics. Our yardstick, according to my thinking, I consists of the most effective balance between the following: First, the reduction in the real costs and selling! prices of goods and services; second, a more economic balance of national income through policies affecting wages, hours, prices and profits.”

Alfred P. Sloan (1875–1966) American businessman

Cited in: Charles Cullen Chapman (1936), The development of American business and banking thought, 1913-1936. p. 265
New York Times interview, 1935

Thinking

“Mathematicians are extremely lucky, they are paid for doing what they would by nature have to do anyway. One should not have a non-teaching fellowship too long, there comes a time when one must make a contribution to society. Great mathematics is achieved by solving difficult problems not by fabricating elaborate theories in search of a problem.”

Harold Davenport (1907–1969) English Mathematician

Harold Davenport, ‎Bryan John Birch, ‎Heini Halberstam (1977), The collected works of Harold Davenport. p. xviii

Search , Mathematics , Nature , Problem

“The most promising lines of development of theory in the sociological and most immediately related fields, particularly the psychological and cultural, therefore, seem to be two-fold. One major direction is the theoretical elaboration and refinement of structural-functional analysis of social systems, including the relevant problems of motivation and their relation to cultural patterns. In this process, the structure of social action provides a basic frame of reference, and aspects of it become of direct substantive importance at many specific points. The main theoretical task, however, is more than a refinement of the conceptual scheme of the presently reprinted book — it involves transition and translation to a different level and focus of theoretical systematization.”

Talcott Parsons (1902–1979) American sociologist

Preface second edition, 1949
The structure of social action (1937)

Books , Motivation , Problem

“The absolute morality that a religious person might profess would include what, stoning people for adultery, death for apostasy, punishment for breaking the Sabbath. These are all things which are religiously based absolute moralities. I don’t think I want an absolute morality. I think I want a morality that is thought out, reasoned, argued, discussed and based upon, I’d almost say, intelligent design [pun intended]. Can we not design our society, which has the sort of morality, the sort of society that we want to live in – if you actually look at the moralities that are accepted among modern people, among 21st century people, we don’t believe in slavery anymore. We believe in equality of women. We believe in being gentle. We believe in being kind to animals. These are all things which are entirely recent. They have very little basis in Biblical or Quranic scripture. They are things that have developed over historical time through a consensus of reasoning, of sober discussion, argument, legal theory, political and moral philosophy. These do not come from religion. To the extent that you can find the good bits in religious scriptures, you have to cherry pick. You search your way through the Bible or the Quran and you find the occasional verse that is an acceptable profession of morality and you say, ‘Look at that. That’s religion,’ and you leave out all the horrible bits and you say, ‘Oh, we don’t believe that anymore. We’ve grown out of that.’ Well, of course we’ve grown out it. We’ve grown out of it because of secular moral philosophy and rational discussion.”

Richard Dawkins (1941) English ethologist, evolutionary biologist and author

Richard Dawkins-George Pell Q&A (2012)

Death , Women , People , Religion

“The Management Process School : This approach to management theory perceives management as a process of getting things done through and with people operating in organized groups. It aims to analyze the process, to establish a conceptual framework for it, to identify principles underlying it, and to build up a theory of management from them. It regards management as a universal process, regardless of the type that the environment of management differs widely between enterprises and levels. It looks upon management theory as a way of organizing experience so that practice can be improved through research, empirical testing of principles, and teaching of fundamentals involved in the management process.”

Harold Koontz (1909–1984)

Source: "The Management Theory Jungle," 1961, p. 175-6

People , School , Way , Universe

“The conflict between the theories of Surrealism & pure abstraction leads many to look upon one as black & bad & the other as white & good. Yet it seems to me that a good work of art has always contained both abstract & surrealist elements – just as it has both classical & romantic elements (order & surprise?)... Surrealism is widening the field of contemporary art & is giving more freedom to the artist (& perhaps what is not unimportant, – stretching the appreciation of the public). Abstraction is re-establishing fundamental laws; bringing back form to painting & sculpture. There are many products of surrealism which I personally dislike,.... but equally Unimportant to me are the empty decorations produced in the name of abstraction.”

Henry Moore (1898–1986) English artist

Source: 1925 - 1940, Unpublished notes' for 'The Sculptor Speaks' (1937), pp. 112-113

Law , Art , Freedom , Painting

“I have noticed that this kind of fanatic, like every other kind, is in two species: the species which too clearly thinks out its own insane theory, and the species which remains perfectly muddle-headed.”

Hilaire Belloc (1870–1953) writer

Source: The Cruise of the 'Nona (1925), p. 83

Thinking

“Although the Gordon and Howell report noted the diversity of approaches to the study of management, it was Harold Koontz who delineated the differences and applied the catchy label ‘‘management theory jungle.”

Daniel A. Wren (1932) American business theorist

Source: The evolution of management thought, 1972, p. 413

Study

“.. I saw Gauguin; he told me his theories about art and assured me that the young [artists] would find salvation by replenishing themselves at remote and savage sources. I told him that this art did not belong to him, that he was a civilized man and hence it was his function to show us harmonious things. We parted, each unconvinced. Gauguin is certainly not without talent, but how difficult it is for him to find his own way! He is always poaching on someone's ground; now he is pillaging the savages of Oceania.”

Camille Pissarro (1830–1903) French painter

Quote about Paul Gauguin 23 Nov. 1893, in Racontars d'un Rapin, Paul Gauguin; as quoted by John Rewald, in 'Introduction' of Camille Pissarro - Letters to His Son Lucien, ed. John Rewald, with assistance of Lucien Pissarro – (translated from the unpublished French letters by Lionel Abel); Pantheon Books Inc. New York, second edition, 1943, p. 221
1890's

Art , Way , Parting

““Organization theory,” a term that appeared in the middle of the twentieth century, has multiple meanings. When it first emerged, the term expressed faith in scientific research as a way to gain understanding of human beings and their interactions. Although scientific research had been occurring for several centuries, the idea that scientific research might enhance understanding of human behavior was considerably newer and rather few people appreciated it. Simon (1950, 1952-3, 1952) was a leading proponent for the creation of “organization theory”, which he imagined as including scientific management, industrial engineering, industrial psychology, the psychology of small groups, human-resources management, and strategy. The term “organization theory” also indicated an aspiration to state generalized, abstract propositions about a category of social systems called “organizations,” which was a very new concept. Before and during the 1800s, people had regarded armies, schools, churches, government agencies, and social clubs as belonging to distinct categories, and they had no name for the union of these categories. During the 1920s, some people began to perceive that diverse kinds of medium-sized social systems might share enough similarities to form a single, unified category. They adopted the term “organization” for this unified category.”

William H. Starbuck (1934) American academic

William H. Starbuck and Philippe Baumard (2009). "The seeds, blossoming, and scant yield of organization theory," in: Jacques Rojot et. al (eds.) Comportement organisationnel - Volume 3 De Boeck Supérieur. p. 15

People , School , Faith , Way

James Jeans (1877–1946) British mathematician and astronomer

Physics and Philosophy (1942)

World , Law , Problem , Sun

“I would rather see you unlettered and unnoticed, if virtuous in practice as well as in theory, than see you the equal in glory to the great Washington.”

Henry Lee III (1756–1818) American politician, governor and representative

Letter to his son, Charles Carter Lee, as quoted in R.E.Lee: A Biography (1934) by Douglas Southall Freeman, Vol. I, p.32.

“It was a part of a budget which even three months had proved to be a mass of miscalculation; it was the pet scheme of a cosmopolitan school who love England little, and whom England loves less, whose sympathies are half-American and half-French; and it was the first application of a theory of combined taxation and reform, according to which the poor were exclusively to fix the revenue which the rich were exclusively to pay.”

Robert Gascoyne-Cecil, 3rd Marquess of Salisbury (1830–1903) British politician

‘The Conservative Reaction’, The Quarterly Review, vol. 108 (July & October 1860), p. 276
1860s

Love , School , Parting

“The neglect of context, it is argued, leads to the development of theories that do not have the potential of understanding development and change over time or for understanding the subtle nuances of interaction that are critical in apprehending what is really occurring.”

Jeffrey Pfeffer (1946) American academic

Source: Organizations and organization theory, 1982, p. 75

Understanding , Change , Time

“As to sociology and anthropology, it is manifest that the importance of information and communication as mechanisms of organization proceeds beyond the individual into the community. On the other hand, it is completely impossible to understand social communities such as those of ants without a thorough investigation of their means of communication, and we were fortunate enough to have the aid of Dr. Schneirla in this matter. For the similar problems of human organization, we sought help from the anthropologists Drs. Bateson and Margaret Mead; while Dr. Morgenstern of the Institute for Advanced Study was our adviser in the significant field of social organization belong to economic theory. His very important joint book on games with Dr. von Neumann, by the way, represents a most interesting study of social organization from the point of view of methods closely related to, although distinct from, the subject matter of cybernetics. Dr. Lewin and others represented the newer work on the theory of opinion sampling and the practice of opinion making, and Dr. F. C. S. Northrup was interested in assaying the philosophical significance of our work.”

Norbert Wiener book Cybernetics: Or Control and Communication in the Animal and the Machine

Introduction. p. 18-19
Cybernetics: Or Control and Communication in the Animal and the Machine (1948)

Books , Way , Game , Communication

“The models of mental illness to be discussed in this chapter come from different philosophical traditions. They do not conform to one conceptual pattern and do not constitute one particular theory. They have in common an attitude towards the mental patient and his problems.”

Thaddus E. Weckowicz (1919–2000) Canadian psychologist

Source: Models of Mental Illness (1984), p. 245-246 ( chapter online http://positivedisintegration.com/Weckowicz1984.pdf)

Problem

“The critical ontology of ourselves has to be considered not, certainly, as a theory, a doctrine, nor even as a permanent body of knowledge that is accumulating; it has to be conceived as an attitude, an ethos, a philosophical life in which the critique of what we are is at one and the same time the historical analysis of the limits that are imposed on us and an experiment with the possibility of going beyond them.”

Michel Foucault (1926–1984) French philosopher

What is Enlightenment? (1978)

Life , Knowledge , Time

“[A] skyhook is … an exception to the principle that all design, and apparent design, is ultimately the result of mindless, motiveless mechanicity. A crane, in contrast, is a subprocess or special feature of a design process that can be demonstrated to permit the local speeding up of the basic, slow process of natural selection, and that can be demonstrated to be itself the predictable (or retroactively explicable) product of the basic process. … [T]he physicist Steven Weinberg, in Dreams of a Final Theory (1992) … distinguishes between uncompromising reductionism (a bad thing) and compromising reductionism (which he ringingly endorses). Here is my own version. We must distinguish reductionism, which is in general a good thing, from greedy reductionism, which is not. The difference, in the context of Darwin's theory, is simple: greedy reductionists think that everything can be explained without cranes; good reductionists think that everything can be explained without skyhooks.”

Daniel Dennett book Darwin's Dangerous Idea

Darwin's Dangerous Idea (1995)

Dreams , Nature , Thinking , Speed

“Louis deliberately chose someone who hadn’t been to university because theories of animal behaviour at that time were very rigid, and Louis didn’t want someone whose mind was biased in that way. Wise man. But still I had the responsibility to prove myself. I remember looking up at the hills and wondering, “Can I do it?””

Jane Goodall (1934) British primatologist, ethologist, and anthropologist

Wanderlust interview (2009)

Way , Universe , Time , Animals

“The inversion theory has a long and fascinating history in the discussion of vertebrate origins. The founding version dates to the early nineteenth century and became the centerpiece of a movement often called "transcendental biology," and centered on the attempt to reduce organic diversity to one or a very few archetypal building blocks that could generate all actual anatomies as products of rational laws of transformation. Some of Europe's greatest thinkers participated in this grand, if flawed enterprise. Goethe, Germany's preeminent poet-scientist, tried to explain the varied parts of plants as different manifestations of an archetypal leaf.”

Stephen Jay Gould book Leonardo's Mountain of Clams and the Diet of Worms

"Brotherhood by Inversion", p. 325
Leonardo's Mountain of Clams and the Diet of Worms (1998)

Law , History , Parting

“One great mystery is why sexual reproduction became dominant for higher life-forms. Optimization theory says it should be otherwise.
Take a fish or lizard, ideally suited to her environment, with just the right internal chemistry, agility, camouflage—whatever it takes to be healthy, fecund, and successful in her world. Despite all this, she cannot pass on her perfect characteristics. After sex, her offspring will be jumbles, getting only half of their program from her and half their re-sorted genes somewhere else.
Sex inevitably ruins perfection. Parthenogenesis would seem to work better—at least theoretically. In simple, static environments, well-adapted lizards who produce duplicate daughters are known to have advantages over those using sex.
Yet, few complex animals are known to perform self-cloning. And those species exist in ancient, stable deserts, always in close company with a related sexual species.
Sex has flourished because environments are seldom static. Climate, competition, parasites—all make for shifting conditions. What was ideal in one generation may be fatal the next. With variability, your offspring get a fighting chance. Even in desperate times, one or more of them may have what it takes to meet new challenges and thrive.
Each style has its advantages, then. Cloning offers stability and preservation of excellence. Sex gives adaptability to changing times. In nature it is usually one or the other. Only lowly creatures such as aphids have the option of switching back and forth.”

David Brin book Glory Season

Introduction to Chapter 8 (pp. 123-124)
Glory Season (1993)

Life , World , Sex , Optimism

“Contingency theories dominate scholarly studies of organization behavior, design, performance, planning and management strategy. While they vary widely in subject matter, they have the common proposition that an organizational outcome is the consequency of a "fit" or match between two or more factors. "Fit" is the key concept in this proposition, and the core problem common to contingency theories is not defining this term clearly. This paper examines three ways to define and test this concept of fit: Selection, Interaction, and Systems approaches. A critical discussion of these three approaches will clarify much of the current confusion in the literature on contingency theories, and suggest ways that future theorizing and research can become more systematic and constructive.”

Andrew H. Van de Ven (1945) American business theorist

Andrew H. Van de Ven and Robert Drazin (1984). The Concept of Fit in Contingency Theory http://www.dtic.mil/cgi-bin/GetTRDoc?AD=ADA152603. No. SMRC-DP-19). Minneapolis: Minnesota University Minneapolis Strategic Management Research Center.

Way , Behavior , Literature , Problem

““Me, I am convinced it is the truth,” said M. Bouc, becoming more and more enamoured of his theory.”

Agatha Christie book Murder on the Orient Express

Murder on the Orient Express (1934)

Truth

“In the present decade, the U. S. economy has undergone its first major depression since the 1930’s, to the accompaniment of inflation rates in excess of 10 percent per annum. These events have been transmitted […] to other advanced countries and in many cases have been amplified. These events did not arise from a reactionary reversion to outmoded, 'classical' principles of tight money and balanced budgets. On the contrary, they were accompanied by massive government budget deficits and high rates of monetary expansion, policies which, although bearing an admitted risk of inflation, promised according to modern Keynesian doctrine rapid real growth and low rates of unemployment. That these predictions were wildly incorrect and that the doctrine on which they were fundamentally flawed are now simple matters of fact, involving no novelties of economic theory. The task now […] is to sort through the wreckage, determining which features of that remarkable intellectual event called the Keynesian Revolution can be salvaged and put to use and which others must be discarded.”

Robert Lucas Jr. (1937) American economist

As contained in The Rational Expectations Revolution: Readings From the Front Line https://en.wikiquote.org/wiki/Special:BookSources/0262631555, Preston J. Miller, MIT Press (reprint 1994), pp. 5-6
"After Keynesian macroeconomics" 1978

Money , Country

“I'm now in a big working period, which takes me up so much that hardly anything of me remains. I have never been strong in theories and this becomes worse and worse. My work should give me satisfaction, and that is about life and death... Several paintings full of life and beauty arose again and give me the courage and joy to proceed on the road. There are also several paintings in which I am involved for less than half, discharges in a short time, which have existence for a while, but will not reach shaping.”

Bram van Velde (1895–1981) Dutch painter

Letter to H. E. Kramer, 28-07-1929, as quoted in: Bram van Velde, A Tribute, Municipal Museum De Lakenhal Leiden, Municipal Museum Schiedam, Museum de Wieger, Deurne 1994 (English translation: Charlotte Burgmans)
1920's

Life , Death , Beauty , Courage

“Even then, though, I cared about people, not theories. I had no wish to spin individual cases into some grandiose, ideologically driven legal theory. I no longer believed in utopian solutions, or the cynical politicians who used them to sucker voters, claiming to care about the poor while actually exploiting them. Not only was I sure that such solutions were doomed to failure, but I also feared that once they failed, the resulting disillusionment would make matters even worse. Yet it was taken for granted in the seventies that the purveyors of these elaborate nostrums were doing the right thing, and anyone who dared to challenge their effectiveness was hooted down. That prospect intimidated me, especially when it came to racial matters.”

Clarence Thomas (1948) Associate Justice of the Supreme Court of the United States

Page 115
2000s, (2008)

People , Fear , Failure

“Opticks was out of harmony with the ideas of 19th-century physics. …an exposition of the "wrong" (i. e., corpuscular) theory of light,—even though it also contained many of the basic principles of the "correct" (i. e., wave) theory. Not only had Newton erred in his choice… but also he apparently had found no insuperable difficulty in simultaneously embracing features of two opposing theories. …by adopting a combination of the two theories at once, he had violated one of the major canons of 19th-century physics… Today our point of view is influenced by the theory of photons and matter waves, or the… complementarity of Niels Bohr; and we may read with a new interest Newtons ideas on the interaction of light and matter or his explanation of the corpuscular and undulatory aspects of light.”

I. Bernard Cohen (1914–2003) American historian of science

I. Bernard Cohen, Preface to Opticks by Sir Isaac Newton (1952)

Idea , Light , Reading

“Under my definition, a scientific theory is a proposed explanation which focuses or points to physical, observable data and logical inferences. There are many things throughout the history of science which we now think to be incorrect which nonetheless would fit that — which would fit that definition. Yes, astrology is in fact one.”

Michael J. Behe (1952) American biochemist, author, and intelligent design advocate

testimony in Kitzmiller v. Dover Area School District, trial transcript: day 11 http://www.talkorigins.org/faqs/dover/day11pm.html#day11pm132 (18 October 2005).

History , Thinking , Science

“In classical Newtonian physics there was a clear understanding of 'what reality is'. Indeed in this classical view, reality at a certain time is the collection of all what is actual at this time, and this is contained in 'the present'. Often it is stated that three dimensional space and one dimensional time have been substituted by four dimensional space-time in relativity theory, and as a consequence the classical concept of reality, as that what is 'present', cannot be retained. Is reality then the four dimensional manifold of relativity theory? And if so, what is then the meaning of 'change in time?”

Diederik Aerts (1953) Belgian theoretical physicist

Aerts, D. (1996). " Relativity theory: what is reality? http://www.vub.ac.be/CLEA/aerts/publications/1996RelReal.pdf". Foundations of Physics, 26, pp. 1627-1644

Understanding , Reality , Change , Time

“In conclusion, a word about your tired expression that there is a difference between theory and praxis. … Thereby you want to say that praxis should be an unencumbered as possible by theory. Coming from you, this wish is quite intelligible. What you mean by praxis is private profit; what I mean by theory is justice.”

Karl Barth (1886–1968) Swiss Protestant theologian

Source: "Jesus Christ and the Movement for Social Justice" (1911), p. 45

Justice , Intelligence

“The second conception of the world via the medium of matter required both a visual and a tactile perception of things. In this case the whole design process tends to emanate from the specific characteristics of the respective medium used. The leader of this movement (Tatlin) assumed.... that the intuitive and artistic mastery of materials would lead to inventions on the basis of which objects could be constructed. He believed he could prove this theory with his design for the 'Monument to the Third International' (1920), [never built]. He accomplished this task without having any special technical knowledge of construction.”

El Lissitsky (1890–1941) Soviet artist, designer, photographer, teacher, typographer and architect

Quote from: 'Basic Premises'
1926 - 1941, Rußland: Die Rekonstruktion der Architektur in der Sowjetunion' (1929)

World , Knowledge

“While economic theory in general may be defined as the theory of how an economic condition or an economic development is determined within an institutional framework, the welfare theory deals with how to judge whether one condition can be said to be better in some way than another and whether it is possible, by altering the institutional framework, to achieve a better condition than the present one.”

John Hicks (1904–1989) British economist

Kenneth Arrow and John Hicks (1972) From Nobel Lectures, Economics 1969-1980, Editor Assar Lindbeck, World Scientific Publishing Co., Singapore, 1992 ( online http://www.nobelprize.org/nobel_prizes/economics/laureates/1972/presentation-speech.html)

Way

“Mass phenomena to which the theory of probability does not apply are, of course, of common occurrence.”

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

Fifth Lecture, Applications in Statistics and the Theory of Errors, p. 141
Probability, Statistics And Truth - Second Revised English Edition - (1957)

“Paradoxes often arise because theory routinely refuses to be subordinate to reality.”

L. K. Samuels (1951) American writer

Source: In Defense of Chaos: The Chaology of Politics, Economics and Human Action, (2013), p. 324

Reality

“Efficient financial regulation theories necessarily derive from lucid postulates about the general invariability of human nature, specifically where financial institution executives are involved (see the latest contributions from the field of evolutionary psychology). There is little chance that this will change much over the next few decades -but it is no use complaining, seeing as greed has always been (and will always be) one of the most powerful drivers of capitalist progress.”

Éric Pichet (1960) economist

Quelle régulation financière pour le XXIè siècle ? http://lecercle.lesechos.fr/entreprises-marches/finance-marches/finances/221144733/quelle-regulation-financiere-xxie-siecle Article in Le Cercle Les Echos (2012): Financial Regulation Theory (2012).
Financial Institution Governance Theory

Nature , Change , Chance

“The President's proclamation is a mighty blow against the legal positivism that infects our legal establishment, and the moral relativism that pervades our society. But this can only be the beginning of a far greater struggle than that against the physical danger of terrorism. It means taking up once again the burden Lincoln bore, in reasserting the truth of the Declaration, against the "positive good" theory of slavery, and against the still more deadly theory that majorities, and not the difference between right and wrong, should decide the future of slavery.”

Harry V. Jaffa (1918–2015) American historian and collegiate professor

2000s, Bush's Lincolnian Challenge (2002)

Truth , Future

“In scientific thought we adopt the simplest theory which will explain all the facts under consideration and enable us to predict new facts of the same kind. The catch in this criterion lies in the word "simplest." It is really an aesthetic canon such as we find implicit in our criticisms of poetry or painting. The layman finds such a law as {\mathrm{\partial }x \over \mathrm{\partial } t} = \Kappa { \, \mathrm{\partial}^2x \over \mathrm{\partial }y^2} much less simple than "it oozes," of which it is the mathematical statement. The physicist reverses this judgment, and his statement is certainly the more fruitful of the two, so far as prediction is concerned. It is, however, a statement about something very unfamiliar to the plainman, namely, the rate of change of a rate of change.”

J. B. S. Haldane (1892–1964) Geneticist and evolutionary biologist

Possible Worlds and Other Papers (1927), p. 227

Law , Mathematics , Change , Painting

“In string theory one studies strings moving in a fixed classical spacetime. …what we call a background-dependent approach. …One of the fundamental discoveries of Einstein is that there is no fixed background. The very geometry of space and time is a dynamical system that evolves in time. The experimental observations that energy leaks from binary pulsars in the form of gravitational waves—at the rate predicted by general relativity to the… accuracy of eleven decimal places—tell us that there is no more a fixed background of spacetime geometry than there are fixed crystal spheres holding the planets up.”

Lee Smolin (1955) American cosmologist

"Loop Quantum Gravity," The New Humanists: Science at the Edge (2003)

Study , Time , Dependency

“Paul Lawrence and Jay Lorsch (1967), who coined the label “contingency theory,” argue that different environments place differing requirements on organizations: specifically, environments characterized by uncertainty and rapid rates of change in market conditions or technologies present different challenges—both constraints and opportunities—to organizations than do placid and stable environments”

W. Richard Scott (1932) American sociologist

Source: Institutions and Organizations., 1995, p. 89 (2001: 103)

Change

“I experience the same sense of absurdity when I listen to a cosmologist like Stephen Hawking telling us that the universe began with a big bang fifteen billion years ago, and that physics will shortly create a 'theory of everything' that will answer every possible question about our universe; this entails the corollary that God is an unnecessary hypothesis. Then I think of the day when I suddenly realized that I did not know where space ended, and it becomes obvious that Hawking is also burying his head in the sand. God may be an unnecessary hypothesis for all I know, and I do not have the least objection to Hawking dispensing with him, but until we can understand why there is existence rather than nonexistence, then we simply have no right to make such statements. It is unscientific. The same applies to the biologist Richard Dawkins, with his belief that strict Darwinism can explain everything, and that life is an accidental product of matter. I feel that he is trying to answer the ultimate question by pretending it does not exist.”

Colin Wilson (1931–2013) author

Source: Alien Dawn (1998), pp. 301-302

Life , God , Feeling , Understanding

“Multiple discoveries are in fact very common in science and for much the same reason. Developments in related fields with different motivation help one to understand a difficult problem better. Since these developments are public knowledge, many scholars can take advantage of them. It is pleasant to the ego to be first or among the first with a new discovery. However, in this case at least, the evidence is clear that the development of general equilibrium theory would have gone on quite as it did without me.”

Kenneth Arrow (1921–2017) American economist

Arrow (1984) "November 1984 lecture at Trinity University". Lecture presented November 5, 1984.
1970s-1980s

Motivation , Understanding , Knowledge , Problem

“A new development began for relativity theory after 1925 with its absorption into quantum physics. The first great success was scored by Dirac's quantum mechanical equations of the electron, which introduced a new sort of quantities, the spinors, besides the vectors and tensors into our physical theories. …But difficulties of the gravest kind turned up when one passed from one electron or photon to the interaction among an indeterminate number of such particles. In spite of several advances a final solution of this problem is not yet in sight and may well require a deep modification of the foundation of quantum mechanics, such as would account in the same basic manner for the elementary electric charge e as relativity theory and our present quantum mechanics account for c and h.”

Hermann Weyl (1885–1955) German mathematician

Preface to the First American Printing (1950) Note: see Paul Dirac, The Principles of Quantum Mechanics (1947)
Space—Time—Matter (1952)

Problem , Success

“No mathematical idea has ever been published in the way it was discovered. Techniques have been developed and are used, if a problem has been solved, to turn the solution procedure upside down, or if it is a larger complex of statements and theories, to turn definitions into propositions, and propositions into definitions, the hot invention into icy beauty. This then if it has affected teaching matter, is the didactical inversion, which as it happens may be anti-didactical. Rather than behaving anti-didactically, one should recognise that the learner is entitled to recapitulate in a fashion of mankind. Not in the trivial matter of an abridged version, but equally we cannot require the new generation to start at the point where their predecessors left off.”

Hans Freudenthal (1905–1990) Dutch mathematician

Source: The Concept and the Role of the Model in Mathematics and Natural and Social Sciences (1961), p. ix

Beauty , Way , Mathematics , Idea

“The Congress, befitting its name of Indian National Congress, had declared itself a representative body of all groups, religious or otherwise, in the country. It was, therefore, its pre-eminent duty to stand steadfast by its commitment to the interests and integrity of the nation as a whole and never succumb to the pressure tactics of any particular section of whatever denomination. However, to the nation's misfortune, the Congress was trapped in the coils of the theories of "composite nation" and "composite culture" and infected with an inferiority complex that unless all communities came to its platform it could not become a national organization. It became nervous at the prospect of being dubbed "communal" if Hindus alone participated in its activities.”

H.V. Sheshadri (1926–2005) Indian writer

Source: The Tragic Story of Partition (1982), p.51

Communication , Country

“In theory, everybody buys the best and cheapest commodities offered to him on the market. In practice, if every one went around pricing, and chemically testing before purchasing, the dozens of soaps or fabrics or brands of bread which are for sale, economic life would become hopelessly jammed.”

Edward Bernays book Propaganda

Source: Propaganda (1928), p. 39

Life

“We debase the richness of both nature and our own minds if we view the great pageant of our intellectual history as a compendium of new information leading from primal superstition to final exactitude. We know that the sun is hub of our little corner of the universe, and that ties of genealogy connect all living things on our planet, because these theories assemble and explain so much otherwise disparate and unrelated information—not because Galileo trained his telescope on the moons of Jupiter or because Darwin took a ride on a Galápagos tortoise.”

Stephen Jay Gould book Eight Little Piggies

"A Foot Soldier for Evolution", p. 441
Eight Little Piggies (1993)

History , Nature , Universe , Sun

“If the Confederacy falls, there should be written on its tombstone: Died of a theory.”

Jefferson Davis book The Rise and Fall of the Confederate Government

The Rise and Fall of the Confederate Government, quoting a remark he had made in 1864.
1860s

“In 1965, I was invited to a game theory workshop at Jerusalem which lasted for three weeks and had only 17 participants, but among them all the important researchers in game theory, with few exceptions. Game theory was still a small field. We had heated discussions about Harsanyi's new theory of games with incomplete information. This was the beginning of my long cooperation with John C. Harsanyi.”

Reinhard Selten (1930–2016) German economist

"Reinhard Selten - Biographical," 1994

Game

“As the degree of observational accuracy at which general relativity becomes significantly different from Newtonian theory is far from being achieved in this field, and as stellar velocities are small compared with light, there is no sign yet that any non-Newtonian theory is required.”

Gerald James Whitrow (1912–2000) British mathematician

"Newton and the Stars" (10 Oct 1957)

Light

“Geoffrey also recognized that the opposite orientations of gut and nervous system posed a problem for his claim that insects and vertebrates represent different versions of the same archetypal animal - and he proposed the first account of the inversion theory to resolve this threat to unification. …Geoffroy pursued the… aim of establishing a "unity of type" that could generate both arthropods and vertebrates from the same basic blueprint. …The single grand design includes a gut in the middle and the main nerve cords somewhere on the periphery.”

Stephen Jay Gould book Leonardo's Mountain of Clams and the Diet of Worms

"Brotherhood by Inversion", p. 326
Leonardo's Mountain of Clams and the Diet of Worms (1998)

Problem , Animals

“Quantum physics emerged from the Stone Age with an embarrassment of riches - three quantum theories, each claiming to explain the world. As it turned out, all three were right.”

Nick Herbert (1936) American physicist

Source: Quantum Reality - Beyond The New Physics, Chapter 3, Quantum Theory takes Charge, p. 42

Age , World

“For a long time, people have been trying to characterize or define the notion of system. After all, “systems” are supposed to be what System Theory is about. The results so far have been contradictory and unsatisfactory. This confusion at the foundations has led many to conclude that there is no such thing as a "system" and hence to deny that System Theory is about anything. Even those most sympathetic to the notion have difficulties at this level. The very founders of System Theory did not try to say what a system was; and as for System Theory, they characterized it only obliquely, by saying it comprised all studies of interest to more than one discipline. They thereby begged the entire question.”

Robert Rosen (1934–1998) American theoretical biologist

Source: "Some comments on systems and system theory," (1986), p. 1

People , Question , Study , Time

“Capitalism is a system in which many scarce resources are owned privately, and decisions about allocating them are a private prerogative. Democracy is a system through which people as citizens may express preferences about allocating resources that they do not privately own. Hence the perennial question of political theory and of practical politics concerns the competence of these two systems with regard to each other. Is it possible for governments to control a capitalist economy? In particular, is it possible to steer the economy against the interests and preferences of those who control productive wealth?”

Adam Przeworski (1940) Polish-American academic

Adam Przeworski and Michael Wallerstein, The American Political Science Review (Mar., 1988)

People , Democracy , Question , Decision

“Reagan finally won the nomination by promoting "Reaganomics", an economic program based on the theory that the government could lower taxes while increasing spending and at the same time actually reduce the federal budget by sacrificing a live chicken by the light of a full moon. Bush charged that this amounted to "voo-doo economics," which got him into hot water until he explained that what he meant to say was "doo-doo economics." Satisfied, Reagan made Bush his vice-presidential nominee. The turning point in the election campaign came during the October 8 debate between Reagan and Carter, when Reagan's handlers came up with a shrewd strategy: No matter what Carter said, Reagan would respond by shaking his head in a sorrowful manner and saying: "There you go again." This was brilliant, because (a) it required the candidate to remember only four words, and (b) he delivered them so believably that everything Carter said seemed like a lie. If Carter had stated that the Earth was round, Reagan would have shaken his head, saying, "There you go again," and millions of voters would have said: "Yeah! What does Carter think we are? Stupid?”

Jimmy Carter (1924) American politician, 39th president of the United States (in office from 1977 to 1981)

Dave Barry, Dave Barry Slept Here: A Sort of History of the United States (1989), p. 167

Lie , Stupidity , Thinking , Light

“I believe that the main lesson of relativity and quantum theory is that the world is nothing but an evolving network of relationships.”

Lee Smolin book Three Roads to Quantum Gravity

Three Roads to Quantum Gravity (2000)

World

“The root of all religions, from the Baha'i point of view, is based on the theory that man will gradually come to understand the unity of the world and the oneness of mankind. It teaches that all the prophets are one – that science and religion are the two great powers which must be balanced if man is to become mature. I feel my work has been influenced by these beliefs. I've tried to decentralize and interpenetrate so that all parts of a painting are of related value.”

Mark Tobey (1890–1976) American abstract expressionist painter

as quoted in Abstract Expressionism, Barbara Hess, Taschen, Köln, 2006, p. 60
posthumous Quotes

World , Religion , Feeling , Understanding

“A theoretical investigation which Einstein published in 1917 provides a third conspicuous landmark. It connected up he two great landmarks already mentioned by showing that the disintegration of radioactive substances is governed by the same laws as the jumps of the kangaroo electrons in the theory of Bohr. In fact radioactive atoms were now seen merely to contain a special breed of kangaroos, much more energetic and ferocious than any that had hitherto been encountered.”

James Jeans (1877–1946) British mathematician and astronomer

Physics and Philosophy (1942)

Law

“The development of American political theories has received surprisingly little attention from students of American history. Even the political ideas of the Revolutionary fathers and the tenets of such important schools as those represented by Jefferson and Adams have not been carefully analyzed or put in their proper perspective. The political theory of the controversies over slavery and the nature of the Union has generally been presented from the partisan point of view, while recent tendencies in political thought have received no adequate notice.”

Charles Edward Merriam (1874–1953) American political scientist

Source: A History of American Political Theories, 1903, p. vii; Preface, lead paragraph

School , History , Idea , Nature

“The problem of method … includes four main issuesː the possibility of an alternative to logic and causation, capable of overcoming the inadequacies of both rationalism and historicism; the link between this third method and causality; the connection between the meaning of an act for its agent and its meaning for an observer; and the relationship of systematic theory to historical understanding.”

Roberto Mangabeira Unger (1947) Brazilian philosopher and politician

Source: Law in Modern Societyː Toward a Criticism of Social Theory (1976), p. 245

Understanding , Problem

“The theory of perspective was taught in painting schools from the sixteenth century onward according to principles laid down by the masters… However, their treatises on perspective had on the whole been precept, rule, and ad hoc procedure; they lacked a solid mathematical basis. In the period from 1500 to 1600 artists and subsequently mathematicians put the subject on a satisfactory deductive basis, and it passed from quasi-empirical art to a true science. Definitive works on perspective were written much later by eighteenth-century mathematicians Brook Taylor and J. H. Lambert.”

Morris Kline (1908–1992) American mathematician

Source: Mathematical Thought from Ancient to Modern Times (1972), p. 183

School , Art , Mathematics , Science

“Liberalism in its political instantiation, for all of its appeal, is so powerful a theory that it probably works better in opposition than in government. Modern liberalism has become what liberal philosophers not long ago would have derided as a “comprehensive view” -- a theory that believes itself able to give an account of how every institution of the society should operate, and even, alas, how people should think. Add to that a dash of triumphalism, and you wind up with a government impatient with the tendency of human beings to resist having too much forced on them at once.”

Stephen L. Carter (1954) American legal academic and writer

Trump and the Fall of Liberalism (November 11, 2016)

People , Thinking

“Having eliminated the soul, modern science cannot understand the body in its most important aspect, which is its capacity for self-importance. Modern biology, particularly the theory of evolution, is based on the overriding concern for survival in all life. This is surely wrong in regard to human life. If you cannot look around you and must insist on indulging a taste for the primitive, you have only to visit the ruins of an ancient people and ponder how much of its GNP was devoted to religion, to its sense of the meaning of human life rather than mere survival.”

Harvey Mansfield (1932) Author, professor

How to Understand Politics: What the Humanities Can Say to Science (2007)

Life , People , Religion , Soul

“If there were no limits to human rationality administrative theory would be barren. It would consist of the single precept: Always select that alternative, among those available, which will lead to the most complete achievement of your goals.”

Herbert A. Simon (1916–2001) American political scientist, economist, sociologist, and psychologist

Simon (1945, p. 240); As cited in:
1940s-1950s

“To me, the fact that the suns magnetic field is linked more closely to earth now lends credence to theories like that of Henrik Svensmark, which points to an extraterrestrial driver of climate change, cosmic rays which form cloud nuclei in our atmosphere, modulated by solar variance.”

Anthony Watts (1958) American television meteorologist

From AGU – the cause of Aurora Borealis and TSI questions http://wattsupwiththat.com/2007/12/15/from-agu-confirming-the-cause-of-aurora-borealis/, wattsupwiththat.com, December 15, 2007.
2007

Change , Sun

“The phenomena of power and influence involve a dyadic relation between two agents which may be viewed from two points of view: (o) What determines the behavior of the agent who exerts power? (h) What determines the reactions of the recipient of this behavior? We take this second point of view and formulate our theory in terms of the life space of P, the person upon whom the power is exerted. In this way we hope to define basic concepts of power which will be adequate to explain many of the phenomena of social influence, including some which have been described in other less genotypic terms.”

John R. P. French (1913–1995) American psychologist

Source: "The bases of social power." 1959, p. 150

Life , Hope , Way , Behavior

“With the subsequent strong support from cybernetics, the concepts of systems thinking and systems theory became integral parts of the established scientific language, and led to numerous new methodologies and applications -- systems engineering, systems analysis, systems dynamics, and so on.”

Fritjof Capra (1939) American physicist

Source: The Web of Life (1996), p. 46.

Support , Thinking , Strong , Parting

“To proceed from assumptions about an abstract theoretical set-up and from them to draw conclusions about the observable world and to test - by rough or more refined means - whether the conformity with observations is "good" enough, is indeed the time honoured procedure that all empirical sciences, including the natural sciences, have used. I shall therefore not plead guilty of heresy even if I do work with choice-theory concepts that are not invariant under a general monotonic transformation of the utility indicator.”

Ragnar Frisch (1895–1973) Norwegian economist

Ragnar Frisch. " A complete scheme for computing all direct and cross demand elasticities in a model with many sectors http://econ.ucdenver.edu/beckman/Research/readings/frisch-demand-econometrica.pdf." Econometrica 27.2 (1959), p. 178; Cited in: Chipman, John S. " http://www.sv.uio.no/econ/om/tall-og-fakta/nobelprisvinnere/ragnar-frisch/Chipman%20paper[1.pdf The contributions of Ragnar Frisch to economics and econometrics]." ECONOMETRIC SOCIETY MONOGRAPHS 31 (1998): 58-110.
1940-60s

World , Nature , Science , Time

“No theory is good unless it permits, not rest, but the greatest work. No theory is good except on condition that one use it to go on beyond.”

André Gide (1869–1951) French novelist and essayist

Detached Pages, entry for 1913
Journals 1889-1949

“There’s a theory that if you have an interesting childhood then you have enough material to last a lifetime. But that implies that art is always autobiographical when reinvention and imagination are the most important elements. But it doesn’t hurt to have a mad family! Of course I didn’t notice until I’d escaped – when I left home as a teenager on a diplomatic scholarship – how odd my family were.”

Carole Morin British writer

Chin Wag At The Slaughterhouse (2013)

Family , Art , Home , Imagination

“Since it is always the same person whose mind thinks, wills, and judges, the autonomous nature of these activities has created great difficulties. Reason’s inability to move the will, plus the fact that thinking can only “understand” what is past what neither remove it nor “rejuvenate it” … have led to the various doctrines asserting the mind’s impotence and the force of the irrational, in brief to Hume’s famous dictum that “Reason is and ought only to be the slave of the passions,” that is, to a rather simple-minded reversal of the Platonic notion of reason’s uncontested rulership in the household of the soul. What is so remarkable in all these theories and doctrines is their implicit monism, the claim that behind the obvious multiplicity of the world’s appearances and, even more pertinently to our context, behind the obvious plurality of man’s faculties and abilities, there must exist a oneness — the old hen pan, “the all is one””

Hannah Arendt book The Life of the Mind

either a single source or a single ruler.
Source: The Life of the Mind (1971/1978), p. 70.

World , Soul , Understanding , Nature

“For while the process of developing cash flow from an asset column in theory is easy, it is the mental fortitude of directing money that is hard.”

Robert T. Kiyosaki (1947) American finance author , investor

Rich Dad Poor Dad: What the Rich Teach Their Kids About Money-That the Poor and the Middle Class Do Not!

Money

“Gradually… during the second half of the nineteenth century, the uncomfortable feeling of dislike of the action at a distance, which had been so strong in Huygens and other contemporaries of Newton, but had subsided during the eighteenth century, began to emerge again, and gained strength rapidly.
This was favoured by the purely mathematical transformation (which can be compared in a sense with that from the Ptolemaic to the Copernican system), replacing Newton's finite equations by the differential equations, the potential becoming the primary concept, instead of the force, which is only the gradient of the potential. These ideas, of course, arose first in the theory of electricity and magnetism or perhaps one should say in the brain of Faraday.”

Willem de Sitter (1872–1934) Dutch cosmologist

Kosmos (1932)

Feeling , Mathematics , Idea , Sense

“All this is very good in theory, but in practice, you take a piece of iron, wind a wire around it, then plug the wire in. The core gets hot, the wires smoke, and the fuse blows. So you see, there are practical limitations to theory.”

James Van Allen (1914–2006) American nuclear physicist

Comments to an undergraduate physics class about transformers, Reach Into Space http://www.time.com/time/magazine/article/0,9171,892531,00.html, Time, 1959-05-04.

“In dealing with our military problems there is one principle that is exceedingly important. Our institutions are founded not on military power but on civil authority. We are irrevocably committed to the theory of a government by the people. We have our constitutions and our laws, our executives, our legislatures, and our courts, but ultimately we are governed by public opinion. Our forefathers had seen so much of militarism, and suffered so much from it, that they desired to banish it forever. They believed and declared in at least one of their State constitutions that the military power should be subordinate to and governed by the civil authority. It is for this reason that any organization of men in the military service bent on inflaming the public mind for the purpose of forcing Government action through the pressure of public opinion is an exceedingly dangerous undertaking and precedent. This is so whatever form it might take, whether it be for the purpose of influencing the Executive, the legislature, or the heads of departments. It is for the civil authority to determine what appropriations shall be granted, what appointments shall be made, and what rules shall be adopted for the conduct of its armed forces. Whenever the military power starts dictating to the civil authority, by whatsoever means adopted, the liberties of the country are beginning to end. National defense should at all times be supported, but any form of militarism should be resisted.”

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

1920s, Toleration and Liberalism (1925)

Men , People , Law , Support

“"Information" in most, if not all, of its connotations seems to rest upon the notion of selective power. The Shannon theory regards the information source, in emitting the signals (signs), as exerting a selective power upon the ensemble of messages. for example, observes that what people value in a source of information (i. e., what they are prepared to pay for) depends upon its exclusiveness and prediction power; he cites instances of a newspaper editor hoping for a "scoop" and a racegoer receiving information from a tipster. "Exclusiveness" here implies the selecting of that one particular recipient out of the population, while the "prediction" value of information rests upon the power it gives to the recipient to select his future action, out of the whole range of prior uncertainty as to what action to take. Again, signs have the power to select responses in people, such responses depending upon a totality of conditions. Human communication channels consist of individuals in conversation, or in various forms of social intercourse. Each individual and each conversation is unique; different people react to signs in different ways, depending each upon their own past experiences and upon the environment at the time. It is such variations, such differences, which gives rise to the principal problems in the study of human communication.”

Colin Cherry (1914–1979) British scientist

Source: On Human Communication (1957), Syntactic, Semantic, and Pragmatic Information, p. 244-5 Source: See Weaver's section of reference 297. Source: (1951). Lectures on Communication Theory, M.I.T. Press, Cambridge, Mass.
Ref: en.wikiquote.org - Colin Cherry / Quotes / On Human Communication (1957) / Syntactic, Semantic, and Pragmatic Information

Time , Way , Future , People

“We perceive clearly that theories and hypotheses are not accepted or rejected outright; they have their periods of activity, and then lie dormant for a time, only to be revived in a new form later on.”

J. R. Partington (1886–1965) British chemist

Introduction
Higher Mathematics for Chemical Students (1911)

Lie , Time

“Let’s hope that no system of theory of systems will ever eliminate the other systems – that no approach will be promoted to a dogma, and no group of scientists will become the high priests. Shouldn’t we rather let a hundred flowers bloom…?”

Gerald M. Weinberg (1933–2018) American computer scientist

Weinberg (1976) cited in: Slawomir Sztaba (2010) "Economy and Sociology. The Likely Directions of Cooperation.". In: WFES. Vol 1, nr.1 2010. p. 218

Hope , Flowers

“Yes it was 1949. How I came to that. That's like how one gets to know a human being. It so happens that I've always had a preference – as everyone has prejudices and preferences – for the square as a shape in preference to the circle as a shape. And I have known for a long time that a circle always fools me by not telling me whether it's standing still or not. And if a circle circulates you don't see it. The outer curve looks the same whether it moves or does not move. So the square is much more honest and tells me that it is sitting on one line of the four, usually a horizontal one, as a basis. And I have also come to the conclusion that the square is a human invention, which makes it sympathetic to me. Because you don't see it in nature. As we do not see squares in nature, I thought that it is man-made. But I have corrected myself. Because squares exist in salt crystals, our daily salt. We know this because we can see it in the microscope. On the other hand, we believe we see circles in nature. But rarely precise ones. Mature, it seems, is not a mathematician. Probably there are no straight lines either. Particularly not since Einstein says in his theory of relativity that there is no straight line, rod knows whether there are or not, I don't. I still like to believe that the square is a human invention. And that tickles me. So when I have a preference for it then I can only say excuse me.”

Josef Albers (1888–1976) German-American artist and educator

Homage to the square' (1964), Oral history interview with Josef Albers' (1968)

Fools , Nature , Time

“Cells are required to stick precisely to the point. Any ambiguity, any tendency to wander from the matter at hand, will introduce grave hazards for the cells, and even more for the host in which they live. Minor inaccuracies may cause reactions in which neighboring cells are recognized as foreign, and done in. There is a theory that the process of aging may be due to the cumulative effect of imprecision, a gradual degrading of information. It is not a system that allows for deviating.”

Lewis Thomas book The Lives of a Cell: Notes of a Biology Watcher

"Information"
The Lives of a Cell: Notes of a Biology Watcher (1974)

Age

“Let a man get once fairly possessed of any peculiar notion, whether it be on religion, political economy, morals, politics, arts, or anything else, and he sees little beside his beloved principle, which he is at all times ready to advance, defend, demonstrate, or expatiate on. Nothing can be simpler than the two great dogmas of Christianity, which are so plain that all can both comprehend them and feel their truth. They teach us to love God, the surest way to obey him, and to love our neighbor as ourselves. Any one can understand this; all can see how just it is, and how much of moral sublimity it contains. It is Godlike, and brings us near the very essence of the Divinity, which is love, mercy, and truth. Yet how few are content to accept the teachings of the Saviour in this respect, without embarrassing them with theories that have so much of their origin in human fancies.”

James Fenimore Cooper (1789–1851) American author

Source: Oak Openings or The bee-hunter (1848), Ch. XVI

Love , God , Truth , Religion

“My view of university training is to unsettle the minds of young men, to widen their horizons, to inflame their intellects. It is not a hardening, or settling process. Education is not to teach men facts, theories, or laws; it is not to reform them, or amuse them, or to make them expert technicians in any field; it is to teach them to think, to think straight if possible; but to think always for themselves.”

Robert Maynard Hutchins (1899–1977) philosopher and university president

Address to the University of Chicago graduating class of 1929

Men , Education , Law , Thinking

“The obscuring of the difference or duality of the sexes has enormous consequences on a variety of levels. This theory of the human person, intended to promote prospects for equality of women through liberation from biological determinism, has in reality inspired ideologies which, for example, call into question the family, in its natural two-parent structure of mother and father, and make homosexuality and heterosexuality virtually equivalent, in a new model of polymorphous sexuality.”

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

2003

Women , Family , Sex , Question

“How it happened that I in particular discovered the relativity theory, it seemed to lie in the following circumstance. The normal adult never bothers his head about space-time problems. Everything there is to be thought about it, in his opinion, has already been done in early childhood. I, on the contrary, developed so slowly that I only began to wonder about space and time when I was already grown up. In consequence I probed deeper into the problem than an ordinary child would have done.”

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

In Carl Seelig's Albert Einstein: A Documentary Biography (1956), Seelig reports that Einstein said this to James Franck, p. 71 http://books.google.com/books?id=VCbPAAAAMAAJ&q=%22how+it+happened%22#search_anchor.
I sometimes ask myself how did it come that I was the one to develop the theory of relativity. The reason, I think, is that a normal adult never stops to think about problems of space and time. But my intellectual development was retarded, as a result of which I began to wonder about space and time only when I had already grown up. Naturally, I could go deeper into the problem than a child with normal abilities.
Variant translation which appears in Einstein: The Life and Times by Ronald W. Clark (1971), p. 27 http://books.google.com/books?id=6IKVA0lY6MAC&lpg=PP1&pg=PA27#v=onepage&q&f=false
Attributed in posthumous publications

Lie , Problem , Time , Childhood

Quotes about theory page 23

Quotes about theory
page 23