Quotes about theory
page 29

Paul Volcker photo
Alfred Freddy Krupa photo
Jacob Bekenstein photo

“There is a prescription that works well, MOND, but the reason it works so well is not known. You may say that MOND tells us how the real theory of gravity should look.”

Jacob Bekenstein (1947–2015) Mexican-Israeli physicist

as quoted in: [Milgrom, Mordehai, MOND from a brane-world picture, arXiv preprint arXiv:1804.05840, 2018, https://arxiv.org/abs/1804.05840] (p. 2)

Thomas Edison photo

“During all those years of experimentation and research, I never once made a discovery. All my work was deductive, and the results I achieved were those of invention, pure and simple. I would construct a theory and work on its lines until I found it was untenable. Then it would be discarded at once and another theory evolved. This was the only possible way for me to work out the problem. … I speak without exaggeration when I say that I have constructed 3,000 different theories in connection with the electric light, each one of them reasonable and apparently likely to be true. Yet only in two cases did my experiments prove the truth of my theory. My chief difficulty was in constructing the carbon filament.... Every quarter of the globe was ransacked by my agents, and all sorts of the queerest materials used, until finally the shred of bamboo, now utilized by us, was settled upon.”

Thomas Edison (1847–1931) American inventor and businessman

On his years of research in developing the electric light bulb, as quoted in "Talks with Edison" by George Parsons Lathrop in Harper's magazine, Vol. 80 (February 1890), p. 425.
Variant:
Through all the years of experimenting and research, I never once made a discovery. I start where the last man left off. … All my work was deductive, and the results I achieved were those of invention pure and simple.
As quoted in Makers of the Modern World : The Lives of Ninety-two Writers, Artists, Scientists, Statesmen, Inventors, Philosophers, Composers, and Other Creators who Formed the Pattern of Our Century (1955) by Louis Untermeyer, p. 227.
1800s

Koenraad Elst photo
Koenraad Elst photo

“To an increasing number of practitioners, computer simulations rooted in mathematics represent a third way of doing science, alongside theory and experiment.”

Ivars Peterson (1948) Canadian mathematician

Source: The Mathematical Tourist: New and Updated Snapshots of Modern Mathematics (1998), Chapter 1, “Explorations” (p. 10)

“The theory of probability combines commonsense reasoning with calculation. It domesticates luck, making it subservient to reason.”

Ivars Peterson (1948) Canadian mathematician

Source: The Jungles of Randomness: A Mathematical Safari (1997), Chapter 1, “The Die is Cast” (p. 19)

Paul Krugman photo
Paul Krugman photo

“Now I’m not saying that Keynes was right about everything, that we should treat The General Theory as a sort of secular bible - the way that Marxists treat Das Kapital.”

Paul Krugman (1953) American economist

But the essential truth of Keynes’s big idea - that even the most productive economy can fail if consumers and investors spend too little, that the pursuit of sound money and balanced budgets is sometimes (not always!) folly rather than wisdom - is as evident in today’s world as it was in the 1930s. And in these dangerous days, we ignore or reject that idea at the world economy’s peril.
"Why aren't we all Keynesians yet?", Fortune (Aug. 3, 1998)

Bhimrao Ramji Ambedkar photo
Bhimrao Ramji Ambedkar photo
Bhimrao Ramji Ambedkar photo
Bhimrao Ramji Ambedkar photo
Wendy Doniger photo
Theobald Wolfe Tone photo

“Impressed as we are with a deep sense of the excellence of our Constitution, as it exists in theory, we rejoice that we are not, like our brothers in France, reduced to the hard necessity of tearing up inveterate abuse by the roots, even where utility was so intermixed as to admit of separation. Ours is an easier and a less unpleasing task; to remove with a steady and a temperate resolution the abuses which the lapse of many years, inattention and supineness in the great body of the people, and unremitting vigilance in their rulers to invade and plunder them of their rights, have suffered to overgrow and to deform that beautiful system of government so admirably suited to our situation, our habits and our wishes. We have not to innovate but to restore. The just prerogatives of our monarch we respect and will maintain. The constitutional powers of the peers of the realms we wish not to invade. We know that in the exercise of both, abuses have grown up; but we also know that those abuses will be at once corrected, so as never again to recur, by restoring to us the people what we for ourselves demand as our right, our due weight and influence in that estate which is our property, the representation of the people in parliament.”

Theobald Wolfe Tone (1763–1798) Irish politician

Address of the Volunteers assembled at Belfast to the people of Ireland (14 July 1792), quoted in T. W. Moody, R. B. McDowell and C. J. Woods (eds.), The Writings of Theobold Wolfe Tone, 1763–98, Volume I: Tone's career in Ireland to June 1795 (1998), p. 218

Theobald Wolfe Tone photo
Adolf Hitler photo
Stephen Wolfram photo

“There’s a tradition of scientists approaching senility to come up with grand, improbable theories. Wolfram is unusual in that he’s doing this in his 40s.”

Stephen Wolfram (1959) British-American computer scientist, mathematician, physicist, writer and businessman

Freeman Dyson cited in: " Living a Paradigm Shift: Looking Back on Reactions to A New Kind of Science http://blog.stephenwolfram.com/2012/05/living-a-paradigm-shift-looking-back-on-reactions-to-a-new-kind-of-science/," blog.stephenwolfram.com May 11, 2012

Nathan Seiberg photo

“Ultimately, we hope to find a fundamental theory that explains everything with no input parameters.”

Nathan Seiberg (1956) American physicist

[Where Is Fundamental Physics Headed? (public talk), 2014, https://www.sns.ias.edu/sites/default/files/Where%20is%20Fundamental%20Physics%20Heading%20Public.pdf]

Nathan Seiberg photo

“Supersymmetry arises naturally in string theory.”

Nathan Seiberg (1956) American physicist

It was originally motivated by string theory.
Source: [The World's Largest Experiment, 2013, https://www.sns.ias.edu/sites/default/files/World's_largest_experiment_%20Delhi.pdf] (public talk at Tryst, Indian Institute of Technology Delhi)

Dick Cheney photo

“Dick Cheney: I don’t know, Hugh. I vacillate between the various theories I’ve heard, but you know, if you had somebody as president who wanted to take America down, who wanted to fundamentally weaken our position in the world and reduce our capacity to influence events, turn our back on our allies and encourage our adversaries, it would look exactly like what Barack Obama’s doing. I think his actions are constituted in my mind those of the worst president we’ve ever had.”

Dick Cheney (1941) American politician and businessman

https://www.youtube.com/watch?v=UzmYQFaGEKU
Hugh Hewitt Radio
2015-04-08, quoted in [Cheney: If You Wanted a President 'To Take America Down … It Would Look Exactly Like What Barack Obama’s Doing, DANIEL HALPER, The Weekly Standard, http://www.weeklystandard.com/blogs/cheney-if-you-wanted-president-take-america-down-it-would-look-exactly-what-barack-obama-s-doing_912837.html, 2015-04-17]
Hewitt and Cheney discuss Obama's ongoing nuclear talks with Iran.
2010s, 2015

Margaret Thatcher photo
John Adams photo
John Kenneth Galbraith photo
Charles Stross photo
Nnedi Okorafor photo

“I believe aliens have definitely been here. I don’t think the theory that they have affected, interacted with, exchanged with the people of Earth (human and otherwise) in the past takes away from the accomplishments or innovations of anyone. I think the general belief that certain peoples are less than other peoples is what does that…”

Nnedi Okorafor (1974) Nigerian-American writer of fantasy and science fiction

On her belief about extraterrestrial life in “Interview: Nnedi Okorafor” http://www.lightspeedmagazine.com/nonfiction/interview-nnedi-okorafor/ in Lightspeed Science Fiction & Fantasy (Mar 2017)
Personal life

J. Howard Moore photo
J. Howard Moore photo
Norman Thomas photo

“The ultimate values in the world are those of personality and no theory of the state, whether socialistic or capitalistic, is valid, which makes it master, not servant, of man.”

Norman Thomas (1884–1968) American Presbyterian minister and socialist

As quoted in Norman Thomas: Respectable Rebel, Murray B. Seidler, Syracuse University Press (1961) p. 27

Albert Einstein photo

“By an application of the theory of relativity to the taste of readers, today in Germany I am called a German man of science, and in England I am represented as a Swiss Jew. If I come to be represented as a bête noire, the descriptions will be reversed, and I shall become a Swiss Jew for the Germans and a German man of science for the English!”

Noch eine Art Anwendung des Relativitätsprinzips zum Ergötzen des Lesers: Heute werde ich in Deutschland als "deutscher Gelehrter", in England als "Schweizer Jude" bezeichnet; sollte ich aber einst in die Lage kommen, als "bète noire" präsentiert zu werden, dann wäre ich umgekehrt für die Deutschen ein „Schweizer Jude“, für die Engländer ein "deutscher Gelehrter".
Einstein On His Theory
The Times
London
1919-11-28
http://archive.timesonline.co.uk/tol/viewArticle.arc?articleId=ARCHIVE-The_Times-1919-11-28-13-011&pageId=ARCHIVE-The_Times-1919-11-28-13, quoted in Herman Bernstein: Celebrities of Our Time. New York 1924. p. 267 ( archive.org http://www.archive.org/details/celebritiesofour000452mbp). Einstein's original German text in The Collected Papers of Albert Einstein. Volume 7. Doc. 25 p. 210, and at germanhistorydocs.ghi-dc.org http://germanhistorydocs.ghi-dc.org/docpage.cfm?docpage_id=5438&language=german after Albert Einstein, Mein Weltbild. Amsterdam: Querido Verlag, 1934, pp. 220-28. Manuscript at alberteinstein.info http://alberteinstein.info/vufind1/Digital/EAR000033998#page/7/mode/2up.
Variant translation: If my theory of relativity is proven correct, Germany will claim me as a German and France will say I am a man of the world. If it's proven wrong, France will say I am a German and Germany will say I am a Jew.
1910s
Variant: If my theory of relativity is proven successful, Germany will claim me as a German and France will declare that I am a citizen of the world. Should my theory prove untrue, France will say that I am a German and Germany will declare that I am a Jew. (Address to the French Philosophical Society at the Sorbonne (6 April 1922); French press clipping (7 April 1922) [Einstein Archive 36-378] and Berliner Tageblatt (8 April 1922) [Einstein Archive 79-535])
Variant: If relativity is proved right the Germans will call me a German, the Swiss will call me a Swiss citizen, and the French will call me a great scientist. If relativity is proved wrong the French will call me a Swiss, the Swiss will call me a German and the Germans will call me a Jew.

Calvin Coolidge photo

“There are only two main theories of government in the world. One rests on righteousness, the other rests on force. One appeals to reason, the other appeals to the sword. One is exemplified in a republic, the other is represented by a despotism. …”

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

1920s, Unveiling of Equestrian Statue of Bishop Francis Asbury, (Oct. 15, 1924)

Kwame Nkrumah photo
Joy Harjo photo
Ralph Waldo Emerson photo
H.L. Mencken photo

“My literary theory, like my politics, is based chiefly upon one idea, to wit, the idea of freedom. I am, in belief, a libertarian of the most extreme variety.”

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

Letter to George Müller (1923), Marion Elizabeth Rodgers, Mencken: The American Iconoclast, Oxford University Press, (2005) pp. 105-106, first published in Autobiographical Notes, 1941
1920s

Robert A. Heinlein photo
Alfredo Rocco photo
William Quan Judge photo
Alfred Percy Sinnett photo
Alfred Percy Sinnett photo
Bhagwan Das photo
Charles Darwin photo

“To suppose that the eye with all its inimitable contrivances for adjusting the focus to different distances, for admitting different amounts of light, and for the correction of spherical and chromatic aberration, could have been formed by natural selection, seems, I freely confess, absurd in the highest degree. When it was first said that the sun stood still and the world turned round, the common sense of mankind declared the doctrine false; but the old saying of Vox populi, vox Dei, as every philosopher knows, cannot be trusted in science. Reason tells me, that if numerous gradations from a simple and imperfect eye to one complex and perfect can be shown to exist, each grade being useful to its possessor, as is certainly the case; if further, the eye ever varies and the variations be inherited, as is likewise certainly the case; and if such variations should be useful to any animal under changing conditions of life, then the difficulty of believing that a perfect and complex eye could be formed by natural selection, though insuperable by our imagination, should not be considered as subversive of the theory. How a nerve comes to be sensitive to light, hardly concerns us more than how life itself originated; but I may remark that, as some of the lowest organisms, in which nerves cannot be detected, are capable of perceiving light, it does not seem impossible that certain sensitive elements in their sarcode should become aggregated and developed into nerves, endowed with this special sensibilites.”

On the Origin of Species (1859)

Alice A. Bailey photo

“Arrest each unloving thought; stamp out each critical action, and teach yourself to love all beings - not in theory but in deed and in truth.”

Alice A. Bailey (1880–1949) esoteric, theosophist, writer

Source: "Discipleship in the New Age" (1944), p. 475

Clement Attlee photo
Edmund Burke photo

“Civil freedom, gentlemen, is not, as many have endeavoured to persuade you, a thing that lies hid in the depth of abstruse science. It is a blessing and a benefit, not an abstract speculation; and all the just reasoning that can bo upon it, is of so coarse a texture, as perfectly to suit the ordinary capacities of those who are to enjoy, and of those who are to defend it. Far from any resemblance to those propositions in geometry and metaphysics, which admit no medium, but must be true or false in all their latitude; social and civil freedom, like all other things in common life, are variously mixed and modified, enjoyed in very different degrees, and shaped into an infinite diversity of forms, according to the temper and circumstances of every community. The extreme of liberty (which is its abstract perfection, but its real fault) obtains no where, nor ought to obtain any where. Because extremes, as we all know, in every point which relates either to our duties or satisfactions in life, are destructive both to virtue and enjoyment. Liberty too must be limited in order to be possessed. The degree of restraint it is impossible in any case to settle precisely. But it ought to be the constant aim of every wise public counsel, to find out by cautious experiments, and rational, cool endeavours, with how little, not how much of this restraint, the community can subsist. For liberty is a good to be improved, and not an evil to be lessened. It is not only a private blessing of the first order, but the vital spring and energy of the state itself, which has just so much life and vigour as there is liberty in it. But whether liberty be advantageous or not, (for I know it is a fashion to decry the very principle,) none will dispute that peace is a blessing; and peace must in the course of human affairs be frequently bought by some indulgence and toleration at least to liberty. For as the sabbath (though of divine institution) was made for man, not man for the sabbath, government, which can claim no higher origin or authority, in its exercise at least, ought to conform to the exigencies of the time, and the temper and character of the people, with whom it is concerned; and not always to attempt violently to bend the people to their theories of subjection. The bulk of mankind on their part are not excessively curious concerning any theories, whilst they are really happy; and one sure symptom of an ill-conducted state, is the propensity of the people to resort to them.”

Edmund Burke (1729–1797) Anglo-Irish statesman

Letter to the Sheriffs of Bristol (1777)

Edmund Burke photo

“You have theories enough concerning the Rights of Men. It may not be amiss to add a small degree of attention to their Nature and disposition.”

Edmund Burke (1729–1797) Anglo-Irish statesman

Letter to Charles-Jean-François Depont (November 1789), quoted in Alfred Cobban and Robert A. Smith (eds.), The Correspondence of Edmund Burke, Volume VI: July 1789–December 1791 (Cambridge University Press, 1967), p. 46
1780s

William Logan (author) photo
Ta-Nehisi Coates photo
Otto von Bismarck photo

“Auschwitz was contained in the principles of Nazi racist theory like the seed in the fruit.”

Ernst Nolte (1923–2016) German historian and philosopher

As quoted in Rethinking the Holocaust, Yehuda Bauer, New Haven: Yale University Press (2001) p. 104

Carl Schmitt photo
Werner Heisenberg photo
Laura Mersini-Houghton photo

“If gravity is a fundamental force, then it has to be explained by an expanded version of general relativity, a more complete, a more fundamental theory. Whether that is quantum gravity of something more radical that requires a paradigm shift like, for instance, our research in multiverse theory, nobody knows at the moment.”

Laura Mersini-Houghton (1969) Albanian cosmologist and theoretical physicist

[Why Is Gravity So Elusive? Frank Wilczek, Erik Verlinde, Laura Mersini-Houghton, 4 December 2017, YouTube, https://www.youtube.com/watch?v=7lui9qZ6cDs] 11:20 of 40:44

Paul Karl Feyerabend photo
Baruch Spinoza photo
Baruch Spinoza photo
Baruch Spinoza photo
Baruch Spinoza photo
Baruch Spinoza photo
Baruch Spinoza photo

“To sum it up in a word: Marx was close to Hegel in his insistence on rejecting every philosophy of the Origin and of the Subject, whether rationalist, empiricist or transcendental; in his critique of the cogito, of the sensualist-empiricist subject and of the transcendental subject, thus in his critique of the idea of a theory of knowledge. Marx was close to Hegel in his critique of the legal subject and of the social contract, in his critique of the moral subject, in short of every philosophical ideology of the Subject, which whatever the variation involved gave classical bourgeois philosophy the means of guaranteeing its ideas, practices and goals by not simply reproducing but philosophically elaborating the notions of the dominant legal ideology. And if you consider the grouping of these critical themes, you have to admit that Marx was close to Hegel just in respect to those features which Hegel had openly borrowed from Spinoza, because all this can be found in the Ethics and the Tractatus Theologico-Politicus.”

Baruch Spinoza (1632–1677) Dutch philosopher

These deep-rooted affinities are normally passed over in pious silence; they nevertheless constitute, from Epicurus to Spinoza and Hegel, the premises of Marx's materialism. They are hardly ever mentioned, for the simple reason that Marx himself did not mention them, and so the whole of the Marx-Hegel relationship is made to hang on the dialectic, because this Marx did talk about!

Louis Althusser, Essays in Self-Criticism (1976), "Is it Simple to be a Marxist in Philosophy?"
A - F, Louis Althusser

Baruch Spinoza photo
Baruch Spinoza photo
W.E.B. Du Bois photo
Imran Khan photo
Zygmunt Vetulani photo
Eratosthenes photo

“Public administration is a process or a theory, not merely an accumulation of detailed facts. It is Verwaltungslehre.”

Marshall E. Dimock (1903–1991) American writer

The object of administrative study should be to discover, first, what government can properly and successfully do, and secondly, how it can do these proper things with the utmost possible efficiency and at the least possible cost both of money and of energy.
Source: "The Study of Administration." 1937, p. 29

“Formal theories of organization have been taught in management courses for many years, and there is an extensive literature on the subject. The textbook principles of organization — hierarchical structure, authority, unity of command, task specialization, division of staff and line, span of control, equality of responsibility and authority, etc.”

Douglas McGregor (1906–1964) American professor

comprise a logically persuasive set of assumptions which have had a profound influence upon managerial behavior.
Source: The Human Side of Enterprise (1960), p. 15 (p. 21 in 2006 edition)

Jayant Narlikar photo
Mohammad Hidayatullah photo
James Braid photo
Paul Bernays photo
Prasanta Chandra Mahalanobis photo
Hans Freudenthal photo

“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.”

Hans Freudenthal (1905–1990) Dutch mathematician

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

“Actor-oriented, dynamic systems theories.”

Tom R. Burns (1937) American sociologist

This family of theories -- inspired to a great extent by Buckley -- is largely non-functionalist. It includes Buckley’s (1967, 1998) “modern systems theory,” Archer’s (1995) “morphogenetic” theory, Burns’ “actor-system-dynamics” (also ASD; Burns et al. 1985; Burns and Flam 1987), and the “sociocybernetics” of Geyer and van der Zouwen (1978). Complex, dynamic social systems are analysed in terms of stabilizing and destabilizing mechanisms, with human agents playing strategic roles in these processes. Institutions and cultural formations of society are carried by, transmitted, and reformed through individual and collective actions and interactions.
Source: Systems theories (2006), p. 3.

“Historical, political economic systems theory.”

Tom R. Burns (1937) American sociologist

The Marxian approach to system theorizing clearly points us to sociologically important phenomena: the material conditions of social life, stratification and social class, conflict, the reproduction as well as transformation of capitalist systems, the conditions that affect group mobilization and political power, and the ways ideas functions as ideologies.
Source: Systems theories (2006), p. 2.

“Functionalist systems theories.”

Tom R. Burns (1937) American sociologist

The theorists in this tradition explain the emergence and/or maintenance of parts, structures, institutions, norms or cultural patterns of a social system in terms of their consequences, that is, the particular functions each realizes or satisfies. This includes, for instance, their contribution to the maintenance and reproduction over time of the larger system. The major functionalist in sociology is arguably Talcott Parsons.
Source: Systems theories (2006), p. 1.

Lotfi A. Zadeh photo

“A frequent source of misunderstanding has to do with the interpretation of fuzzy logic. The problem is that the term fuzzy logic has two different meanings. More specifically, in a narrow sense, fuzzy logic, FLn, is a logical system which may be viewed as an extension and generalization of classical multivalued logics. But in a wider sense, fuzzy logic, FLw is almost synonymous with the theory of fuzzy sets.”

Lotfi A. Zadeh (1921–2017) Electrical engineer and computer scientist

In this context, what is important to recognize is that: (a) FL<sub>w</sub> is much broader than FL<sub>n</sub> and subsumes FL<sub>n</sub> as one of its branches; (b) the agenda of FL<sub>n</sub> is very different from the agendas of classical multivalued logics; and (c) at this juncture, the term fuzzy logic is usually used in its wide rather than narrow sense, effectively equating fuzzy logic with FL<sub>w</sub>
Zadeh (1995) in Foreword of George J. Klir Fuzzy sets and fuzzy logic: theory and applications.
1990s

John Scalzi photo
William John Macquorn Rankine photo
William John Macquorn Rankine photo

“Some of the evils which are caused by the fallacy of an incompatibility between theory and practice having been described, it must now be admitted, that at the present time those evils show a decided tendency to decline.”

William John Macquorn Rankine (1820–1872) civil engineer

The extent of intercourse, and of mutual assistance, between men of science and men of practice, the practical knowledge of scientific men, and the scientific knowledge of practical men, have been for some time steadily increasing; and that combination and harmony of theoretical and practical knowledge—that skill in the application of scientific principles to practical purposes, which in former times was confined to a few remarkable individuals, now tends to become more generally diffused.
"On the Harmony of Theory and Practice in Mechanics" (Jan. 3, 1856)

Thomas Young (scientist) photo
Edward Witten photo

“Even before string theory, especially as physics developed in the 20th century, it turned out that the equations that really work in describing nature with the most generality and the greatest simplicity are very elegant and subtle.”

Edward Witten (1951) American theoretical physicist

in a NOVA interview Viewpoints on String Theory, Edward Witten http://www.pbs.org/wgbh/nova/elegant/view-witten.html, July 2003.

“A theory can never be proven absolutely true, therefore there is no end to scientific endeavor.”

Kristine Larsen (1963) American astronomer

A true scientific theory is always open to be disproved, and the burden of proof is continually placed on the scientist.
[Kristine Larsen, Cosmology 101, Greenwood Publishing Group, 2007, http://books.google.com/books?id=xye8K0LYKawC&pg=PP21, 0-313-33731-4, xvii]

Alvin M. Weinberg photo

“The philosophy of science is concerned with how you decide if a scientific finding is correct or true. You have to establish criteria to determine if the finding or theory is valid. Validity is a fundamental problem in the philosophy of science, but the fundamental problem in the philosophy of scientific administration is the question of value.”

Alvin M. Weinberg (1915–2006) American nuclear physicist

Two scientific activities are equally valid if they achieve results that are true. Now, how do you decide which activity is more valuable? The question of value is the basic question that the scientific administrator asks so that decisions can be made about funding priorities.
Interview http://www.ornl.gov/info/ornlreview/rev28-1/text/wbgbar.htm by Bill Cabage and Carolyn Krause for the ORNL Review (April 1995).

Rose Wilder Lane photo
Antoine Lavoisier photo
Douglas Coupland photo