Quotes about hypothesis

A collection of quotes on the topic of hypothesis, use, other, theory.

Quotes about hypothesis

“We consider it a good principle to explain the phenomena by the simplest hypothesis possible.”

Book III, sec 1 (trans. Gerald J. Toomer)
Almagest

“If the hypothesis of evolution is true, living matter must have arisen from non-living matter; for by the hypothesis the condition of the globe was at one time such, that living matter could not have existed in it, life being entirely incompatible with the gaseous state.”

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

In the Encyclopaedia Britannica, Ninth edition, (1876) Vol. III, "Biology", p. 689.
Also quoted in Joseph Cook (1878), Biology, with Preludes on Current Events, Houghton, Osgood, p. 39
1870s

Life, Time

“There are two possible outcomes: if the result confirms the hypothesis, then you've made a measurement. If the result is contrary to the hypothesis, then you've made a discovery.”

Enrico Fermi (1901–1954) Italian physicist

As quoted in Nuclear Principles in Engineering (2005) by Tatjana Jevremovic, p. 397

“Only two suppositions seem to be open to us — Either each species of crocodile has been specially created, or it has arisen out of some pre-existing form by the operation of natural causes.
Choose your hypothesis; I have chosen mine. I can find no warranty for believing in the distinct creation of a score of successive species of crocodiles in the course of countless ages of time.”

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

1860s, On a Piece of Chalk (1868)

Age, Nature, Time, Success

“Any physical theory is always provisional, in the sense that it is only a hypothesis: you can never prove it. No matter how many times the results of experiments agree with some theory, you can never be sure that the next time the result will not contradict the theory.”

Stephen Hawking book A Brief History of Time

Source: A Brief History of Time (1988), Ch. 1
Context: Any physical theory is always provisional, in the sense that it is only a hypothesis: you can never prove it. No matter how many times the results of experiments agree with some theory, you can never be sure that the next time the result will not contradict the theory. On the other hand, you can disprove a theory by finding even a single observation that disagrees with the predictions of the theory. As philosopher of science Karl Popper has emphasized, a good theory is characterized by the fact that it makes a number of predictions that could in principle be disproved or falsified by observation. Each time new experiments are observed to agree with the predictions the theory survives, and our confidence in it is increased; but if ever a new observation is found to disagree, we have to abandon or modify the theory.

Sense, Time

“The first rule of learning philosophy is to ban the hypothesis of knowing anything. You must go beyond your own opinions.”

Mwanandeke Kindembo (1996) Congolese author

Learning

“The philosopher Didactylos has summed up an alternative hypothesis as "Things just happen. What the hell".”

Terry Pratchett book Hogfather

Source: Hogfather

Hell

“The psycho-physiological hypothesis is both inductively and deductively the sine qua non of the science of psychology.”

Boris Sidis (1867–1923) American psychiatrist

Source: The Foundations of Normal and Abnormal Psychology (1914), p. 86

Science

“In other words, the fundamental principles and indispensable postulates of every genuinely productive science are not based on pure logic but rather on the metaphysical hypothesis — which no rules of logic can refute — that there exists an outer world which is entirely independent of ourselves. It is only through the immediate dictate of our consciousness that we know that this world exists. And that consciousness may to a certain degree be called a special sense.”

Max Planck (1858–1947) German theoretical physicist

Where is science going? The Universe in the light of modern physics. (1932)

World, Sense, Science

“We see from Lenard's table that a cathode ray can travel through air at atmospheric pressure a distance of about half a centimetre before the brightness of the phosphorescence falls to about half its original value. Now the mean free path of the molecules of air at this pressure is about 10-5 cm., and if a molecule of air were projected it would lose half its momentum in a space comparable with the mean free path. Even if we suppose that it is not the same molecule that is carried, the effect of the obliquity of the collisions would reduce the momentum to half in a short multiple of that path. Thus, from Lenard's experiments on the absorption of the rays outside the tube, it follows on the hypothesis that the cathode rays are charged particles moving with high velocities, that the size of the carriers must be small compared with the dimensions of ordinary atoms or molecules. The assumption of a state of matter more finely subdivided than the atom of an element is a somewhat startling one; but a hypothesis that would involve somewhat similar consequences—viz. that the so-called elements are compounds of some primordial element—has been put forward from time to time by various chemists.”

J. J. Thomson (1856–1940) British physicist

Royal Institution Lecture (April 30, 1897) as quoted by Edmund Taylor Whittaker, A History of the Theories of Aether and Electricity from the Age of Descartes to the Close of the Nineteenth Century http://books.google.com/books?id=CGJDAAAAIAAJ (1910). <br class="br">Quotes eat me

Travel, Time

“We need to go back to the discovery, to posing a question, to having a hypothesis and having kids know that they can discover the answers and can peel away a layer.”

Shirley Jackson (physicist) (1946) American physicist, eighteenth president of the Rensselaer Polytechnic Institute

in Charlie Rose Science Series: The Imperative of Science http://www.charlierose.com/view/interview/9027 with Paul Nurse, President of Rockefeller University, Harold Varmus, president of Memorial Sloan-Kettering Cancer Center, Shirley Ann Jackson, President of Rensselaer Polytechnic Institute, Bruce Alberts, Editor-In-Chief of Science and Lisa Randall of Harvard University.

Question

“We now come to the question of applying the observational tests to earlier theories. These theories were based on the hypothesis that all the matter in the universe was created in one big bang at a particular time in the remote past. It now turns out that… all such theories are in conflict with observational requirements.”

Fred Hoyle (1915–2001) British astronomer

BBC radio broadcast, March 28, 1949. http://www.joh.cam.ac.uk/library/special_collections/hoyle/exhibition/radio/ Reprinted in April 1949 in The Listener, a BBC magazine.

Question, Universe, Time, Past

“Think of a hypothesis as a card. A theory is a house made of hypotheses.”

Marilyn vos Savant (1946) US American magazine columnist, author and lecturer

Attributed in Proceedings of the Twenty-fifth Hawaii International Conference on System Sciences (1991)

Thinking, Housing

“The best and safest method of philosophizing seems to be, first to enquire diligently into the properties of things, and to establish these properties by experiment, and then to proceed more slowly to hypothesis for the explanation of them. For hypotheses should be employed only in explaining the properties of things, but not assumed in determining them, unless so far as they may furnish experiments.”

Isaac Newton (1643–1727) British physicist and mathematician and founder of modern classical physics

Letter to Ignatius Pardies (1672) Philosophical Transactions of the Royal Society (Feb. 1671/2) as quoted by William L. Harper, Isaac Newton's Scientific Method: Turning Data Into Evidence about Gravity and Cosmology (2011)

“I believe in clear-cut positions. I think that the most arrogant position is this apparent, multidisciplinary modesty of "what I am saying now is not unconditional, it is just a hypothesis," and so on. It really is a most arrogant position. I think that the only way to be honest and expose yourself to criticism is to state clearly and dogmatically where you are. You must take the risk and have a position.”

Slavoj Žižek (1949) Slovene philosopher

Conversations with Žižek by Slavoj Žižek and Glyn Daly (Cambridge: Polity Press, 2004), p. 45

Way, Thinking

“Cagan’s adaptive mechanism for explaining expectations of inflation has sometimes been criticized as an ad hoc formulation that is inconsistent with the hypothesis that expectations are rational. In this paper, we have showed that conditions exist under which adaptive expectations are fully rational.”

Thomas J. Sargent (1943) American economist

"Rational expectations and the dynamics of hyperinflation." 1973

“Persisting in their original resolve to destroy me and everything mine by any means they can think of, these men are aware of my views in astronomy and philosophy. They know that as to the arrangement of the parts of the universe, I hold the sun to be situated motionless in the center of the revolution of the celestial orbs while the earth revolves about the sun. They know also that I support this position not only by refuting the arguments of Ptolemy and Aristotle, but by producing many counter-arguments; in particular, some which relate to physical effects whose causes can perhaps be assigned in no other way. In addition there are astronomical arguments derived from many things in my new celestial discoveries that plainly confute the Ptolemaic system while admirably agreeing with and confirming the contrary hypothesis.”

Galileo Galilei Letter to the Grand Duchess Christina

Variant translation: I hold that the Sun is located at the centre of the revolutions of the heavenly orbs and does not change place, and that the Earth rotates on itself and moves around it. Moreover … I confirm this view not only by refuting Ptolemy's and Aristotle's arguments, but also by producing many for the other side, especially some pertaining to physical effects whose causes perhaps cannot be determined in any other way, and other astronomical discoveries; these discoveries clearly confute the Ptolemaic system, and they agree admirably with this other position and confirm it.
Letter to the Grand Duchess Christina (1615)

Men, Way, Support, Thinking

“Personally, I feel more irritated by a challenge to an accepted scientific theory than I do by an act of so-called "evil" or "injustice" among mankind; although I never allow my irritation to hamper my acceptance of the new theory as soon as positive evidence warrants it. Thus I have reluctantly exchanged the old nebular for the planetesimal hypothesis, and am beginning to accept the main points of relativity despite a profound intellectual distaste. What is, is—and our emotions regarding the cosmos and its phenomena are of no significance whatever, being wholly subjective matters dependent on individual accidents of neural and glandular physiology and of experience and environment.”

H.P. Lovecraft (1890–1937) American author

Letter to Woodburn Harris (25 February-1 March 1929), in Selected Letters II, 1925-1929 edited by August Derleth and Donald Wandrei, pp. 287-288
Non-Fiction, Letters

Feeling, Evil, Dependency, Personality

“(Coining phrase "null hypothesis") In relation to any experiment we may speak of this hypothesis as the “null hypothesis,” and it should be noted that the null hypothesis is never proved or established, but is possibly disproved, in the course of experimentation. Every experiment may be said to exist only in order to give the facts a chance of disproving the null hypothesis.”

Ronald Fisher book The Design of Experiments

The Design of Experiments, Edinburgh: Oliver and Boyd, 1935, p. 18
1930s

Chance

“Every explanation is after all an hypothesis.”

Ludwig Wittgenstein (1889–1951) Austrian-British philosopher

Source: 1930s-1951, Philosophical Occasions 1912-1951 (1993), Ch. 7 : Remarks on Frazer's Golden Bough, p. 123

“Darcy wants to present himself to Elizabeth as a proud gentleman, and he gets from her the message 'your pride is nothing but contemptible arrogance.' After the break in their relationship each discovers, through a series of accidents, the true nature of the other - she the sensitive and tender nature of Darcy, he her real dignity and wit - and the novel ends as it should, with their marriage. The theoretical interest of this story lies in the fact that the failure of their first encounter, the double misrecognition concerning the real nature of the other, functions as a positive condition of the final outcome: we cannot say 'if, from the very beginning, she had recognized his real nature and he hers, their story could have ended at once with their marriage.' Let us take a comical hypothesis that the first encounter of the future lovers was a success - that Elizabeth had accepted Darcy's first proposal. What would happen? Instead of being bound together in true love they would become a vulgar everyday couple, a liaison of an arrogant, rich man and a pretentious, every-minded young girl… If we want to spare ourselves the painful roundabout route through the misrecognition, we miss the truth itself: only the working-through of the misrecognition allows us to accede to the true nature of the other and at the same time to overcome our own deficiency - for Darcy, to free himself of his false pride; for Elizabeth, to get rid of her prejudices.”

Slavoj Žižek book The Sublime Object of Ideology

67
The Sublime Object of Ideology (1989)

Love, Pain, Marriage, Truth

“Freedom can be manifested only in the void of beliefs, in the absence of axioms, and only where the laws have no more authority than a hypothesis.”

Emil M. Cioran book History and Utopia

History and Utopia (1960)

Law, Freedom

“If I were to awaken after having slept for a thousand years, my first question would be: Has the Riemann hypothesis been proven?”

David Hilbert (1862–1943) German prominent mathematician

Quoted in Mathematical Mysteries : The Beauty and Magic of Numbers (1999) by Calvin C. Clawson, p. 258

Question

“H. A. Lorentz has found out the Relativity theorem and has created the Relativity postulate as a hypothesis that electrons and matter suffer contractions in consequence of their motion according to a certain law. A. Einstein has brought out the point very clearly, that this postulate is not an artificial hypothesis but is rather a new way of comprehending the time-concept, which is forced upon us by observation of natural phenomena.”

Hermann Minkowski The Fundamental Equations for Electromagnetic Processes in Moving Bodies

The Fundamental Equations for Electromagnetic Processes in Moving Bodies (1907)

Law, Way, Nature, Suffering

“All testing, all confirmation and disconfirmation of a hypothesis takes place already within a system.”

Ludwig Wittgenstein book On Certainty

On Certainty (1969)
Context: 105. All testing, all confirmation and disconfirmation of a hypothesis takes place already within a system. And this system is not a more or less arbitrary and doubtful point of departure for all our arguments; no it belongs to the essence of what we call an argument. The system is not so much the point of departure, as the element in which our arguments have their life.

“In the realm of faith, God is not a hypothesis derived from logical assumptions, but an immediate insight, self-evident as light.”

Abraham Joshua Heschel (1907–1972) Polish-American Conservative Judaism Rabbi

"The Holy Dimension", p. 337.
Heschel made similar statements in earlier writings: The great insight is not attained when we ponder or infer the beyond from the here. In the realm of the ineffable, God is not a hypothesis derived from logical assumptions, but an immediate insight, self-evident as light. He is not something to be sought in the darkness with the light of reason. He is the light.
Man Is Not Alone : A Philosophy of Religion (1951)
Moral Grandeur and Spiritual Audacity: Essays (1997)
Context: In the realm of faith, God is not a hypothesis derived from logical assumptions, but an immediate insight, self-evident as light. To rationalists He is something after which they seek in the darkness with the light of their reason. To men of faith He is the light.

God, Faith, Light

“The hypothesis has been proposed that all mental events and experiences, in fact the whole of the outer and inner sensory experiences, are a composite of elemental or unitary mental experiences at all levels of intensity.”

John C. Eccles book How the Self Controls Its Brain

He here refers to his proposal in "A unitary hypothesis of mind-brain interaction in the cerebral cortex" (1990); published in Proceedings of the Royal Society B 240, p. 433 - 451
How the Self Controls Its Brain (1994)
Context: The hypothesis has been proposed that all mental events and experiences, in fact the whole of the outer and inner sensory experiences, are a composite of elemental or unitary mental experiences at all levels of intensity. Each of these mental units is reciprocally linked in some unitary manner to a dendron … Appropriately we name these proposed mental units 'psychons.' Psychons are not perceptual paths to experiences. They are the experiences in all their diversity and uniqueness. There could be millions of psychons each linked uniquely to the millions of dendrons. It is hypothesized that it is the very nature of psychons to link together in providing a unified experience.

“Whoever having undertaken to speak or write on Medicine, have first laid down for themselves some hypothesis to their argument, such as hot, or cold, or moist, or dry”

Hippocrates (-460–-370 BC) ancient Greek physician

Ancient Medicine
Context: Whoever having undertaken to speak or write on Medicine, have first laid down for themselves some hypothesis to their argument, such as hot, or cold, or moist, or dry, or whatever else they choose, (thus reducing their subject within a narrow compass, and supposing only one or two original causes of diseases or of death among mankind,) are all clearly mistaken in much that they say; and this is the more reprehensible as relating to an art which all men avail themselves of on the most important occasions... For there are practitioners, some bad and some far otherwise, which, if there had been no such thing as Medicine, and if nothing had been investigated or found out in it... all would have been equally unskilled and ignorant of it, and everything concerning the sick would have been directed by chance. But now it is not so; for, as in all the other arts, those who practise them differ much from one another in dexterity and knowledge, so is it in like manner with Medicine. Wherefore I have not thought that it stood in need of an empty hypothesis, like those subjects which are occult and dubious... as, for example, with regard to things above us [meteorology, astronomy or astrology] and things below the earth [geology, Hades, ]; if any one should treat of these and undertake to declare how they are constituted, the reader or hearer could not find out, whether what is delivered be true or false; for there is nothing which can be referred to in order to discover the truth.<!--pp. 161-162

“Many people assert that this abandonment of the god hypothesis means the abandonment of all religion and all moral sanctions. This is simply not true. But it does mean, once our relief at jettisoning an outdated piece of ideological furniture is over, that we must construct some thing to take its place.”

Julian Huxley (1887–1975) English biologist, philosopher, author

The New Divinity (1964)
Context: God is a hypothesis constructed by man to help him understand what existence is all about.... To say that God is ultimate reality is just semantic cheating, as well as being so vague as to become effectively meaningless... Today the god hypothesis has ceased to be scientifically tenable, has lost its explanatory value and is becoming an intellectual and moral burden to our thought. It no longer convinces or comforts, and its abandonment often brings a deep sense of relief. Many people assert that this abandonment of the god hypothesis means the abandonment of all religion and all moral sanctions. This is simply not true. But it does mean, once our relief at jettisoning an outdated piece of ideological furniture is over, that we must construct some thing to take its place.

God, People, Religion

“I will explain therefore how, studying in the silence of my heart, and far from every human consideration, the mystery of social revolutions, God, the great unknown, has become for me an hypothesis, — I mean a necessary dialectical tool.”

Pierre Joseph Proudhon (1809–1865) French politician, mutualist philosopher, economist, and socialist

Introduction
The Philosophy of Misery (1846)
Context: Tormented by conflicting feelings, I appealed to reason; and it is reason which, amid so many dogmatic contradictions, now forces the hypothesis upon me. A priori dogmatism, applying itself to God, has proved fruitless: who knows whither the hypothesis, in its turn, will lead us?
I will explain therefore how, studying in the silence of my heart, and far from every human consideration, the mystery of social revolutions, God, the great unknown, has become for me an hypothesis, — I mean a necessary dialectical tool.

God, Study, Silence, Heart

“The world in which we live can be understood as a result of muddle and accident; but if it is the outcome of a deliberate purpose, the purpose must have been that of a fiend. For my part, I find accident a less painful and more plausible hypothesis.”

Bertrand Russell (1872–1970) logician, one of the first analytic philosophers and political activist

Essay Do We Survive Death? (1936)
1930s
Context: It is only when we think abstractly that we have such a high opinion of man. Of men in the concrete, most of us think the vast majority very bad. Civilized states spend more than half their revenue on killing each other's citizens. Consider the long history of the activities inspired by moral fervour: human sacrifices, persecutions of heretics, witch-hunts, pogroms leading up to wholesale extermination by poison gases … Are these abominations, and the ethical doctrines by which they are prompted, really evidence of an intelligent Creator? And can we really wish that the men who practised them should live for ever? The world in which we live can be understood as a result of muddle and accident; but if it is the outcome of a deliberate purpose, the purpose must have been that of a fiend. For my part, I find accident a less painful and more plausible hypothesis.

Pain, World, Parting

“There is no logically necessary connection between events at different times; therefore nothing that is happening now or will happen in the future can disprove the hypothesis that the world began five minutes ago.”

Bertrand Russell (1872–1970) logician, one of the first analytic philosophers and political activist

The Analysis of Mind (1921), Lecture IX: Memory, p. 159
1920s
Context: There is no logical impossibility in the hypothesis that the world sprang into being five minutes ago, exactly as it then was, with a population that "remembered" a wholly unreal past. There is no logically necessary connection between events at different times; therefore nothing that is happening now or will happen in the future can disprove the hypothesis that the world began five minutes ago.

World, Time, Future

“I have not thought that it stood in need of an empty hypothesis, like those subjects which are occult and dubious… as, for example, with regard to things above us”

Hippocrates (-460–-370 BC) ancient Greek physician

“It does take great maturity to understand that the opinion we are arguing for is merely the hypothesis we favor, necessarily imperfect, probably transitory, which only very limited minds can declare to be a certainty or a truth.”

Milan Kundera book Encounter

Source: Encounter

Truth, Understanding

“The dictionary is based on the hypothesis -- obviously an unproven one -- that languages are made up of equivalent synonyms.”

Jorge Luis Borges (1899–1986) Argentine short-story writer, essayist, poet and translator, and a key figure in Spanish language literature

“Each form of the sacrosanct was regarded by members of the culture which gave rise to it as a revelation of the Truth; at Byzantium it was not a mere hypothesis that was sponsored by the majesty of the Byzantine style. To us, however, these forms make their appeal as forms alone — in other words, as they would be were they the work of a contemporary (and, since this actually is unthinkable, they affect us in a puzzling manner); or else as so many grandiose vestiges of a faith that has died out. We look at them from outside; they are still emotive, but they are no longer true. Thus we deprive them of what was their most vital element; for a religious civilization that regarded what it revered as a mere hypothesis is inconceivable.”

André Malraux (1901–1976) French novelist, art theorist and politician

Part IV, Chapter V
Les voix du silence [Voices of Silence] (1951)

Truth, Faith

“The hypothesis that human emissions of CO2 can create global warming can be tested by measurement. … No warming has occured since 1998. … During that time atmospheric CO2 has increased. … The test of the hypothesis above shows that there is no relationship between measured temperature and CO2 emissions. The hypothesis fails.”

Ian Plimer book Heaven and Earth

Heaven and Earth (2009)

Time

“Neither Lynn Margulis nor I have ever proposed a teleological hypothesis. Nowhere in our writing do we express the idea that planetary self-regulation is purposeful, or involves planetary foresight or planning by the biota. …Yet we met persistent, almost dogmatic, criticism that our hypothesis is teleological.”

James E. Lovelock (1919) independent scientist, environmentalist and futurist

Healing Gaia (1991)

Idea

“We are now in a position to prove the following propositions : —
1. The distance of the sun from the earth is greater than eighteen times, but less than twenty times, the distance of the moon (from the earth); this follows from the hypothesis about the halved moon.
2. The diameter of the sun has the same ratio (as aforesaid) to the diameter of the moon.
3. The diameter of the sun has to the diameter of the earth a ratio greater than that which 19 has to 3, but less than that which 43 has to 6; this follows from the ratio thus discovered between the distances, the hypothesis about the shadow, and the hypothesis that the moon subtends one fifteenth part of a sign of the zodiac.”

Aristarchus of Samos ancient Greek astronomer and mathematician

p, 125
On the Sizes and Distances of the Sun and the Moon (c. 250 BC)

Time, Sun, Parting

“No Dilettantism in this Mahomet; it is a business of Reprobation and Salvation with him, of Time and Eternity: he is in deadly earnest about it! Dilettantism, hypothesis, speculation, a kind of amateur-search for Truth, toying and coquetting with Truth: this is the sorest sin. The root of all other imaginable sins. It consists in the heart and soul of the man never having been open to Truth; — "living in a vain show." Such a man not only utters and produces falsehoods, but is himself a falsehood. The rational moral principle, spark of the Divinity, is sunk deep in him, in quiet paralysis of life-death.”

Thomas Carlyle (1795–1881) Scottish philosopher, satirical writer, essayist, historian and teacher

1840s, Heroes and Hero-Worship (1840), The Hero as Prophet

Life, Death, Truth, Soul

“The hypothesis you refer to as God, though not disprovable by logic alone, is unnecessary for the following reason.
If you assume that the universe can be quote explained unquote as the creation of an entity known as God, he must obviously be of a higher degree of organization than his product. Thus you have more than doubled the size of the original problem, and have taken the first step on a diverging infinite regress. William of Ockham pointed out as recently as your fourteenth century that entities should not be multiplied unnecessarily. I cannot therefore understand why this debate continues.”

Arthur C. Clarke book The Fountains of Paradise

Source: The Fountains of Paradise (1979), Chapter 16 “Conversations with Starglider” (p. 95)

God, Quotes, Understanding, Problem

“There can be no question that Darwin had nothing like sufficient evidence to establish his theory of evolution.. . . His general theory, that all life on earth had originated and evolved by a gradual successive accumulation of fortuitous mutations, is still, as it was in Darwin’s time, a highly speculative hypothesis entirely without direct factual support and very far from that self-evident axiom some of its more aggressive advocates would have us believe.. . . One might have expected that a theory of such cardinal importance, a theory that literally changed the world, would have been something more than metaphysics, something more than a myth.”

Michael Denton book Evolution: A Theory in Crisis

Source: Evolution: A Theory in Crisis (1986), p. 69, 77, 358

Life, World, Question, Support

“I adopt Mr. Darwin's hypothesis, therefore, subject to the production of proof that physiological species may be produced by selective breeding; just as a physical philosopher may accept the undulatory theory of light, subject to the proof of the existence of the hypothetical ether; or as the chemist adopts the atomic theory, subject to the proof of the existence of atoms; and for exactly the same reasons, namely, that it has an immense amount of primâ facie probability: that it is the only means at present within reach of reducing the chaos of observed facts to order; and lastly, that it is the most powerful instrument of investigation which has been presented to naturalists since the invention of the natural system of classification and the commencement of the systematic study of embryology.”

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

Source: 1860s, Evidence as to Man's Place in Nature (1863), Ch.2, p. 128

Nature, Study, Light

“If financial markets aren't efficient, then what are they? According to the 'fractal market hypothesis', they are highly unstable dynamic systems that generate stock prices which appear random, but behind which lie deterministic patterns.”

Steve Keen (1953) Australian economist

Source: Debunking Economics - The Naked Emperor Of The Social Sciences (2001), Chapter 11, Finance And Economic Breakdown, p. 243

Lie, Appearance

“In recent years there has been increased interest in the effects of internal communication on decision processes. A number of hypotheses relating the bias in information to the final decision have been proposed. In this paper we discuss two laboratory experiments which were designed to test two such hypotheses. The first experiment tests the hypothesis that cost and sales estimations are made with the implicit assumption that a biased pay-off structure exists. The second experiment tests explicitly the effects of biased and unbiased pay-off structures on estimation within an organization. An analysis of the data for the two experiments is made and some implications for further research are drawn from the results.”

Richard Cyert (1921–1998) American economist

Richard Cyert, James G. March, William H. Starbuck. (1961) "Two experiments on bias and conflict in organisational estimation," Management Science, 254–64; Abstract

Communication, Decision

“Although previously the monoamine systems were considered to be responsible for the development of major depressive disorder (MDD), the available evidence to date does not support a direct causal relationship with MDD. There is no simple direct correlation of serotonin or norepinephrine levels in the brain and mood. In other words, after a half-century of research, the chemical-imbalance hypothesis as promulgated by the drug companies that manufacture SSRIs and other antidepressants is not only without clear and consistent support, but has been disproved by experimental evidence.”

Irving Kirsch book The Emperor's New Drugs

The Emperor's New Drugs: Exploding the Antidepressant Myth. p. 92 http://books.google.com/books?id=wk-OxcTKyi4C&pg=PA92

Mood, Support

William H. Starbuck (1934) American academic

Richard Cyert, James G. March, William H. Starbuck. (1961) "Two experiments on bias and conflict in organisational estimation," Management Science, 254–64; Abstract

Communication, Decision

“The only secondary cause… which has, as yet, been even conjecturally brought forward, to explain how, in the ordinary course of nature, a new specific form may be generated is, as Lamarck declared, 'variation,' and this has been rendered a far more probable hypothesis by the way in which Natural Selection is shown to give intensity and permanency to certain varieties.”

Charles Lyell (1797–1875) British lawyer and geologist

Source: The Geological Evidences of the Antiquity of Man (1863), Ch.21, p. 422

Way, Nature

“If by religion, we are understand sectarian dogmas, in which no two of them agree, then your exclamation on that hypothesis is just, "that this would be the best of all possible worlds, if there were no religion in it." But if the moral precepts, innate in man, and made a part of his physical constitution, as necessary for a social being, if the sublime doctrines of philanthropism and deism taught us by Jesus of Nazareth, in which all agree, constitute true religion, then, without it, this would be, as you again say, "something not fit to be named, even indeed, a hell."”

Thomas Jefferson (1743–1826) 3rd President of the United States of America

Letter to John Adams, 5 May 1817, in The Writings of Thomas Jefferson (Lipscomb-Bergh edition, 1903), Volume XV, p. 109
1810s

World, Religion, Hell, Understanding

“Let me tell you the story of the most successful organism of all time: this is the story of the parasite. … Early on, evolution branched into two distinct paths: independent organisms—those that exist on their own in the natural world—and parasites—organisms that live on other organisms. And it was, by far, the parasites that proved the more successful of the two branches. Today, for every independent organism in nature, there exist three parasites. … These two strains of evolution have been locked in a primordial arms race, constantly evolving to best each other for supremacy of this planet. As parasites evolve to perfect their systems against a species of host, the host evolves to evade their attack. Scientists call this theory of an eternal genetic struggle the Red Queen Hypothesis—a name taken from Lewis Carroll's Through the Looking Glass.”

Daniel Suarez Daemon

Source: Daemon (2006), Chapter 31: Red Queen Hypothesis, Character: Sobol

World, Nature, Time, Success

“The Abbé Breuil died in 1961, and with him died the all-encompassing hunting magic hypothesis. By this time another French archeologist, André Leroi-Gourhan, had been developing his own interpretation, one based on the emerging ideas on structuralism.”

Richard Leakey (1944) Kenyan paleoanthropologist, conservationist, and politician

Origins Reconsidered: In Search of What Makes Us Human (1992)

Idea, Time

“I had a growing feeling in the later years of my work at the subject that a good mathematical theorem dealing with economic hypothesis was very well unlikely to be good economics: and I went more and more on the rules - (1) Use mathematics as shorthand language, rather than as an engine of inquiry. (2) Keep to them till you have done. (3) Translate into English. (4) Then illustrate by examples that are important in real life (5) Burn the mathematics. (6) If you can’t succeed in 4, burn 3. This last I do often.”

Alfred Marshall (1842–1924) British economist

Letter to A.L. Bowley, 27 February 1906, cited in: David L. Sills, Robert King Merton, Social Science Quotations: Who Said What, When, and Where http://books.google.com/books?id=WIKQbew5YKcC&pg=PA151 Transaction Publishers, 2000. p. 151.

Life, Feeling, Mathematics

“Arriving in Berlin, I found myself in my element, and began to breathe freely. Jerusalem and Lessing had given us letters of introduction to the greatest men in Berlin; but they knew us already, Leisewitz as author of "Julius Von Tarent," and myself as author of my Dissertation. We had daily the choice of the first society; covers were laid for us in the first families daily, for dinner as well as supper. Von Zetlitz sent a general invitation that covers were laid for us every day during our stay in Berlin. Most of the time we could spare was divided between physicians and philosophers, of which the latter had the greater share. Spalding, Mendelsohn, Eberhard, Engel, Nicolai, Reichard, and Madame Bamberger, daughter of Doctor Sack, Bishop of Berlin, honoured us with their most sincere friendship. The latter, a highly gifted and accomplished lady, possessed the rare art of spreading over the most abstract hypothesis and theorem the brightest and most charming light; Jerusalem, the father of the ill-fated Werther (see the "Sorrows of Werther," by Goethe), used to send her his works to correct, and she alone was able to console and comfort him, when he was informed of the death of his beloved son. This amiable lady assumes in common life the character of a plain woman, and when at court, as friend of the Queen and the Princess Amalie, she won all hearts by her truly noble man ners and unconstrained courtesy: at court beloved, she was admired, nay, adored in the philosophical clubs. But do not think that here alone we spent all our time; Madame Bamberger knew how to blend study with amusement; she issued frequently cards of invitation to select parties, for suppers and balls, and her house was the point of union of all that was learned, beautiful, and amiable. Thus Berlin became my Paradise. I had the most tempting offers from the Minister of State to stay here; but the illness of my father obliged me, after a stay of three months, to return home. I visited Lessing on my journey back; stayed two days, which were the most interesting of all days I ever remember.”

Albrecht Thaer (1752–1828) German agronomist and an avid supporter of the humus theory for plant nutrition

My Life and Confessions, for Philippine, 1786

Life, Death, Men, Friendship

“The great tragedy of Science — the slaying of a beautiful hypothesis by an ugly fact.”

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

Presidential Address at the British Association, "Biogenesis and abiogenesis" (1870) http://aleph0.clarku.edu/huxley/CE8/B-Ab.html; later published in Collected Essays, Vol. 8, p. 229 <br class="br">1870s

Beauty, Science

“The only part of evolution in which any considerable interest is felt is evolution applied to man. A hypothesis in regard to the rocks and plant life does not affect the philosophy upon which one's life is built. Evolution applied to fish, birds and beasts would not materially affect man's view of his own responsibilities except as the acceptance of an unsupported hypothesis as to these would be used to support a similar hypothesis as to man. The evolution that is harmful— distinctly so — is the evolution that destroys man’s family tree as taught by the Bible and makes him a descendant of the lower forms of life. This … is a very vital matter.”

William Jennings Bryan (1860–1925) United States Secretary of State

God and Evolution (1922)

Life, Family, Support, Bird

“I accept nothing on authority. A hypothesis must be backed by reason, or else it is worthless.”

Isaac Asimov book I, Robot

“Reason”, p. 52
I, Robot (1950)

“Induction was shown to be untenable as a scientific method by Popper in The Logic of Scientific Discovery (1959). Instead, advances in scientific understanding come ideally from hypothetico-deductivism: firstly, development of a hypothesis in relation to a problem situation, and secondly, its testing in relation to all relevant knowledge and furthermore by its great explanatory power.”

John C. Eccles book How the Self Controls Its Brain

How the Self Controls Its Brain (1994)

Understanding, Knowledge, Problem

“This implication of the Mathematical Universe Hypothesis is pretty radical, so please pause your reading for a moment to take it in and think about it. What you’re aware of right at this moment feels not like a photo but like a movie clip. This movie isn’t reality—it exists only in your head, as part of your brain’s reality model. It contains lots of information about the actual external physical reality—as long as you aren’t dreaming or hallucinating—but still constitutes only a very heavily edited version of reality, akin to the evening news on TV, mainly featuring certain highlights of patterns nearby in space and time that your brain thinks are useful for you to be aware of.”

Max Tegmark book Our Mathematical Universe

Our Mathematical Universe: My Quest for the Ultimate Nature of Reality (2014)

Dreams, Feeling, Photo, Mathematics

“An explanation of a phenomenon is regarded, apparently instinctively, as the most general possible when it is a mechanical explanation. The "mechanism" of the process is the ultimate goal of experiment. Now this mechanism in general lies beyond the range of the senses; either by reason of their limitations, as in the case of the atomic structure of matter, or by the very nature of the supposed mechanism, as in the theory of the ether. The only way to bridge the gap between the machinery of the physical process and the world of sense-impressions is to think out some consequence of that mechanism. This we will call the hypothesis. The hypothesis, resting still on the mechanical basis, is yet beyond the range of direct experimental investigation; but if, by mathematical reasoning, a consequence of the hypothesis can be deduced, this will often lie within the range of experimental inquiry, and thus a test of the soundness of the original mechanical conception may be instituted.”

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

Introduction
Higher Mathematics for Chemical Students (1911)

Lie, World, Way, Mathematics

“In order to shake a hypothesis, it is sometimes not necessary to do anything more than push it as far as it will go.”

Denis Diderot (1713–1784) French Enlightenment philosopher and encyclopædist

No. 50
On the Interpretation of Nature (1753)

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

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

Theism and humanism

Lie, Way, Parting

“I am aware that the great Plato himself, and after him, a man posterior to him in date, though not in mind, I mean Iamblichus of Chalcis (who initiated us into other branches of philosophy, and also into this by means of his discourses), did both of them as far as hypothesis goes, take for granted the fact of a Creation and assumed the universe to have been, in a certain sense, the Work of Time, in order that the most important of the effects produced by this Power, may be reduced into a shape for examination.”

Julian (emperor) (331–363) Roman Emperor, philosopher and writer

Upon the Sovereign Sun (362)

Sense, Universe, Time

“From the beginning I could not believe that the “efficient market” hypothesis was dependent on a pure Brownian motion white noise or any truly random random walk. Place a minuscule colloidal molecule on a horizontal table that covers unlimited acres. Bombard it from every direction with thousands of minute atoms; and then if you wait long enough that original molecule can have traveled a billion miles in one direction. That’s truly a random Bachelier-Einstein walk, but not my notion of economic fluctuations.”

Paul A. Samuelson (1915–2009) American economist

New millennium, An Enjoyable Life Puzzling Over Modern Finance Theory, 2009

Travel, Waiting, Dependency

“One finds in this subject a kind of demonstration which does not carry with it so high a degree of certainty as that employed in geometry; and which differs distinctly from the method employed by geometers in that they prove their propositions by well-established and incontrovertible principles, while here principles are tested by inferences which are derivable from them. The nature of the subject permits of no other treatment. It is possible, however, in this way to establish a probability which is little short of certainty. This is the case when the consequences of the assumed principles are in perfect accord with the observed phenomena, and especially when these verifications are numerous; but above all when one employs the hypothesis to predict new phenomena and finds his expectations realized.”

Christiaan Huygens book Treatise on Light

Treatise on Light (1690) - preface, Translated by Michael R. Matthews, Scientific Background to Modern Philosophy. 1989. p. 126

Way, Nature, Perfection

“The first objection to Darwinism is that it is only a guess and was never anything more. It is called a “hypothesis,” but the word “hypothesis,” though euphonioous, dignified and high-sounding, is merely a scientific synonym for the old-fashioned word “guess.” If Darwin had advanced his views as a guess they would not have survived for a year, but they have floated for half a century, buoyed up by the inflated word “hypothesis.” When it is understood that “hypothesis” means “guess,” people will inspect it more carefully before accepting it.”

William Jennings Bryan (1860–1925) United States Secretary of State

God and Evolution (1922)

People, Fashion

“The day of the last hypothesis would be also the day of the last observation… An hypothesis displaced by new facts dies an honorable death. If it has itself summoned to its trial the facts by which it is annihilated, it deserves even a monument of gratitude.”

Jacob Henle (1809–1885) German physician, anatomist, and zoologist

Handbook of Rational Pathology, 1846-1853

Death, Gratitude

“The hypothesis underlying all approaches to the landscape is that there is a cosmological setting in which different regions or epochs of the universe can have different effective laws. This implies the existence of spacetime regions not directly observable… These regions must either be in the past of our big bang, or far enough away from us to be causally unrelated.”

Lee Smolin (1955) American cosmologist

"A perspective on the landscape problem" arXiv (Feb 15, 2012)

Law, Universe, Past

“When we consider a human work, we believe we know where the "intelligence" which fashioned it comes from; but when a living being is concerned, no one knows or ever knew, neither Darwin nor Epicurus, neither Leibniz nor Aristotle, neither Einstein nor Parmenides. An act of faith is necessary to make us adopt one hypothesis rather than another. Science, which does not accept any credo, or in any case should not, acknowledges its ignorance, its inability to solve this problem which, we are certain, exists and has reality.”

Pierre-Paul Grassé (1895–1985) French zoologist

Evolution of living organisms: evidence for a new theory of transformation (1977)

Faith, Intelligence, Fashion, Problem

“I am always deeply suspicious of received wisdom. As far as I am concerned man-made global warming is nothing more than a hypothesis that hasn't got any basis in fact. Every day more scientists are modifying their initial views. Recently 60 German scientists wrote to Chancellor Angela Merkel saying there was no proof for carbon causing global warming.”

Godfrey Bloom (1949) UK EU parliament member

BBC News http://news.bbc.co.uk/1/hi/programmes/politics_show/regions/yorkshire_and_lincolnshire/8298649.stm

Wisdom

“From the standpoint of exact natural science, of the explanation of nature from causes, the assumption of an earth-soul is… an hypothesis for the explanation of Being and of the historical development of the organic world.”

Bernhard Riemann (1826–1866) German mathematician

Gesammelte Mathematische Werke (1876)

World, Soul, Nature, Science

“Unlike every other other nation in the world, the United States defines itself as a hypothesis and constitutes itself as an argument.”

Lewis H. Lapham (1935) American journalist

Time Lines, p. 64
Waiting For The Barbarians (1997)

World

“Is the position tenable, that certain phenomena, possible in Euclidean space, would be impossible in non-Euclidean space, so that experience, in establishing these phenomena, would directly contradict the non-Euclidean hypothesis? For my part I think no such question can be put. To my mind it is precisely equivalent to the following, whose absurdity is patent to all eyes: are there lengths expressible in meters and centimeters, but which can not be measured in fathoms, feet, and inches, so that experience, in ascertaining the existence of these lengths, would directly contradict the hypothesis that there are fathoms divided into six feet?”

Henri Poincaré book Science and Hypothesis

Source: Science and Hypothesis (1901), Ch. V: Experiment and Geometry (1905) Tr. https://books.google.com/books?id=5nQSAAAAYAAJ George Bruce Halstead

Question, Thinking, Parting

“Instead of insanity eliminating the crime according to the original meaning of article 64, every crime and even every offense now carries within it, as a legitimate suspicion, but also as a right that may be claimed, the hypothesis of insanity, in any case of anomaly. And the sentence that condemns or acquits is not simply a judgement of guily, a legal decision that lays down punishment; it bears within it an assessment of normality and a technical prescription for a possible normalization Today the judge- magistrate or juror0 certainly does more than 'judge”

Michel Foucault book Discipline and Punish

Source: Discipline and Punish (1977), pp. 20-21

Decision

“Don't just read it; fight it! Ask your own question, look for your own examples, discover your own proofs. Is the hypothesis necessary? Is the converse true? What happens in the classical special case? What about the degenerate cases? Where does the proof use the hypothesis?”

Paul R. Halmos (1916–2006) American mathematician

I Want to be a Mathematician: An Automathography (1985)

Question, Reading, Fight

“There is a familiar trio of reactions by scientists to a purportedly radical hypothesis: (a) "You must be out of your mind!", (b) "What else is new? Everybody knows that!", and, later — if the hypothesis is still standing — (c) "Hmm. You *might* be on to something!" Sometimes these phases take years to unfold, one after another, but I have seen all three emerge in near synchrony in the course of a half-hour's heated discussion following a conference paper.”

Daniel Dennett book Darwin's Dangerous Idea

Darwin's Dangerous Idea (1995)

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

Reinout Willem van Bemmelen (1904–1983) Dutch geologist

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

Error, Nature, Appearance

“The atomic hypothesis which had worked so splendidly in Physics breaks down in Psychics.”

John Maynard Keynes (1883–1946) British economist

"Francis Ysidro Edgeworth", p. 286; Originally published in The Economic Journal, March 1926

Ref: en.wikiquote.org - John Maynard Keynes / Quotes / Essays In Biography (1933)
Essays In Biography (1933), Francis Ysidro Edgeworth

“This 'Hodge conjecture' has by now achieved a considerable status, almost on a par with the Riemann hypothesis or the Poincaré conjecture.”

Michael Atiyah (1929–2019) British mathematician

[Michael Atiyah, Collected Works: Michael Atiyah Collected Works: Volume 1: Early Papers; General Papers, http://books.google.com/books?id=YJ0cZwxLECAC&pg=PA250, 28 April 1988, Clarendon Press, 978-0-19-853275-0, 250]

“Much early alchemy seems to have been adventure. You heated and mixed and burnt and pounded and to see what would happen. An adventure might suggest an hypothesis that can subsequently be tested, but adventure is prior to theory.”

Ian Hacking (1936) Canadian philosopher

Source: The Emergence Of Probability, 1975, Chapter 4, Evidence, p. 36.

“Science Of Energetics. Although the mechanical hypothesis just mentioned may be useful and interesting as a means of anticipating laws, and connecting the science of thermodynamics with that of ordinary mechanics, still it is to be remembered that the science of thermodynamics is by no means dependent for its certainty on that or any other hypothesis, having been now reduced, to a system of principles, or general facts, expressing strictly the results of experiment as to the relations between heat and motive power. In this point of view the laws of thermodynamics may be regarded as particular cases of more general laws, applicable to all such states of matter as constitute Energy, or the capacity to perform work, which more general laws form the basis of the science of energetics, — a science comprehending, as special branches, the theories of motion, heat, light, electricity, and all other physical phenomena.”

William John Macquorn Rankine (1820–1872) civil engineer

Source: A Manual of the Steam Engine and Other Prime Movers (1859), p. 31

Law, Motivation, Light, Science

“In the preface to the reissue of Risk, Uncertainty and Proﬁt, Frank Knight makes the penetrating observation that under the conditions envisaged above the velocity of circulation would become inﬁnite and so would the price level. This is perhaps an over-dramatic way of saying that nobody would hold money, and it would become a free good to go into the category of shell and other things which once served as money. We should expect too that it would not only pass out of circulation, but it would cease to be used as a conventional numeraire in terms of which prices are expressed. Interest bearing money would emerge. Of course, the above does not happen in real life, precisely because uncertainty, contingency needs, non-synchronization of revenues and outlay, transaction frictions, etc., etc., all are with us. But the abstract special case analyzed above should warn us against the facile assumption that the average levels of the structure of interest rates are determined solely or primarily by these differential factors. At times they are primary, and at other times, such as the twenties in this country, they may not be. As a generalization I should hazard the hypothesis that they are likely to be of great importance in an economy in which there is a “quasi-zero" rate of interest. I think by this hypothesis one can explain many of the anomalies of the United States money market in the thirties.”

Paul A. Samuelson book Foundations of Economic Analysis

Source: 1940s, Foundations of Economic Analysis, 1947, Ch. 5 : Theory of Consumer’s Behavior

Life, Money, Way, Thinking

“We will found our hypothesis in the general laws of motion, whose effects are every where the same, and whose influence extends to the utmost limits of matter.”

Johann Heinrich Lambert (1728–1777) German mathematician, physicist and astronomer

The System of the World (1800)

Law

“Although to penetrate into the intimate mysteries of nature and thence to learn the true causes of phenomena is not allowed to us, nevertheless it can happen that a certain fictive hypothesis may suffice for explaining many phenomena.”
Quanquam nobis in intima naturae mysteria penetrare, indeque veras caussas Phaenomenorum agnoscere neutiquam est concessum: tamen evenire potest, ut hypothesis quaedam ficta pluribus phaenomenis explicandis aeque satisfaciat, ac si vera caussa nobis esset perspecta.

Leonhard Euler (1707–1783) Swiss mathematician

§1
A conjecture about the nature of air (1780)

Nature, Learning

“For me… the notion of an intimate relationship between music and society functions not as a distant goal but as a starting point of great immediacy, and not as an hypothesis but as an assumption. It functions as an idea about a relationship which in turn allows the examination of that relationship from many points of view and its exploration in many directions. It is an idea that generates studies the goal of which (or at least one important goal of which) is to articulate something essential about why any particular music is the way it is in particular, that is, to achieve insight into the character of its identity.”

Rose Rosengard Subotnik (1942) American musicologist

Rose Rosengard Subotnik (1987). "On grounding Chopin", Music and Society: The Politics of Composition, Performance, and Reception. Cambridge: Cambridge University Press. ISBN 0521379776.

Music, Way, Idea, Study

“Is it dangerous to claim that parents have no power at all (other than genetic) to shape their child's personality, intelligence, or the way he or she behaves outside the family home? … A confession: When I first made this proposal ten years ago, I didn't fully believe it myself. I took an extreme position, the null hypothesis of zero parental influence, for the sake of scientific clarity. … The establishment's failure to shoot me down has been nothing short of astonishing.”

Judith Rich Harris (1938–2018) psychology researcher

The Edge Annual Question — 2006: WHAT IS YOUR DANGEROUS IDEA? http://www.edge.org/q2006/q06_6.html#harris

Family, Way, Home, Intelligence