Nature quotes

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Aristotle

Four Causes

“Plainly, then, these are the causes, and this is how many they are. They are four, and the student of nature should know them all, and it will be his method, when stating on account of what, to get back to them all: the matter, the form, the thing which effects the change, and what the thing is for.”'
  • Source: Aristotle, From Physics, Book II, Part 7, 198a21-26. As quoted in Stephen Everson, 'Aristotle on the Foundations of the State', Political Studies (1988), 36, 89-101. Reprinted in Lloyd P. Gerson (ed.), Aristotle: Politics, Rhetoric and Aesthetics (1999), 74.

Men Desire to Know

“All men by nature desire to know.”
  • Source: Aristotle, ‘Metaphysics’, Book 1.

Francis_Bacon

Axioms

“It cannot be that axioms established by argumentation should avail for the discovery of new works, since the subtlety of nature is greater many times over than the subtlety of argument. But axioms duly and orderly formed from particulars easily discover the way to new particulars, and thus render sciences active.”
  • Source: Sir Francis Bacon, From Novum Oranum (1620), Book 1, Aphorism 24. Translated as The New Organon: Aphorisms Concerning the Interpretation of Nature and the Kingdom of Man), collected in James Spedding, Robert Ellis and Douglas Heath (eds.), The Works of Francis Bacon (1857), Vol. 4, 51.

Claude_Bernard

Experimental Method Object

“The object of the experimental method is to transform this ‘a priori’ conception, based on an intuition or a vague feeling about the nature of things, into an ‘a posteriori’ interpretation founded on the experimental study of phenomena.”
  • Source: From the book "An Introduction to the Study of Experimental Medicine" written by Claude Bernard published in French in 1865 as "Introduction à l'étude de la médecine expérimentale". Translated to English by Henry Copley Greene in 1927 and republished by Henry Shuman, Inc. in 1949. Chapter II, page 27. Available online at https://archive.org/details/b21270557 retrieved 2024.
  • Note: ‘A priori’ is Latin for ‘from the earlier’. ‘A posteriori’ is Latin for ‘from the later’.

Alter Theory Not Nature

“The theories which embody our scientific ideas as a whole are, of course, indispensable as representations of science. They should also serve as a basis for new ideas. But as these theories and ideas are by no means immutable truth, one must always be ready to abandon them, to alter them or to exchange them as soon as they cease to represent the truth. In a word, we must alter theory to adapt it to nature, but not nature to adapt it to theory.”
  • Source: From the book "An Introduction to the Study of Experimental Medicine" written by Claude Bernard published in French in 1865 as "Introduction à l'étude de la médecine expérimentale". Translated to English by Henry Copley Greene in 1927 and republished by Henry Shuman, Inc. in 1949. Chapter II, page 39. Available online at https://archive.org/details/b21270557 retrieved 2024.

Arthur_Bloch

Murphy's Law Corollary 9

“Nature always sides with the hidden flaw.”
  • Source: Attributed to Edward A Murphy, reported in the book “Murphy's Law and Other Reasons Why Things Go Wrong” written by Arthur Bloch, first edition published in 1977 by Price/Stern/Sloan, Los Angeles, California. ISBN-10: 0843104287. ISBN-13: 978-0843104288. Chapter Murphology, page 11.

Murphy's Law Corollary 10

“Mother nature is a bitch.”
  • Source: Attributed to Edward A Murphy, reported in the book “Murphy's Law and Other Reasons Why Things Go Wrong” written by Arthur Bloch, first edition published in 1977 by Price/Stern/Sloan, Los Angeles, California. ISBN-10: 0843104287. ISBN-13: 978-0843104288. Chapter Murphology, page 11.

Niels_Bohr

No Quantum World

“There is no quantum world. There is only an abstract quantum physical description. It is wrong to think that the task of physics is to find out how nature is. Physics concerns what we can say about nature.”
  • Source: The words of Niels Bohr as reported by Aage Petersen in his article ‘The Philosophy of Niels Bohr’ published in the journal Bulletin of the Atomic Scientists, September 1963, volume XIX, number 7. Available online at https://books.google.pt/books?id=DgcAAAAAMBAJ retrieved 2024.

Ludwig_Bolztman

Awkward Mind

“How awkward is the human mind in divining the nature of things, when forsaken by the analogy of what we see and touch directly.”

Dietrich_Bonhoeffer

Stupidity Defect

“If we want to know how to get the better of stupidity, we must seek to understand its nature. This much is certain, that it is in essence not an intellectual defect but a human one. There are human beings who are of remarkably agile intellect yet stupid, and others who are intellectually quite dull yet anything but stupid.”
  • Source: From the paper “An Account at the Turn of the Year 1942-1943” by Dietrich Bonhoeffer, contained within the book “Dietrich Bonhoeffer: Volume 8: Letters and Papers from Prison” edited by John W. Gruchy, et al. Published in 2009 by Fortress Press.

Stupidity Power

“Upon closer observation, it becomes apparent that every strong upsurge of power in the public sphere, be it of a political or a religious nature, infects a large part of humankind with stupidity. It would even seem that this is virtually a sociological-psychological law. The power of the one needs the stupidity of the other.”
  • Source: From the paper “An Account at the Turn of the Year 1942-1943” by Dietrich Bonhoeffer, contained within the book “Dietrich Bonhoeffer: Volume 8: Letters and Papers from Prison” edited by John W. Gruchy, et al. Published in 2009 by Fortress Press.

George_E_P_Box

Models are Approximations

“...all models are approximations. Essentially, all models are wrong, but some are useful. However, the approximate nature of the model must always be borne in mind...”
  • Source: George E.P. Box [Co-author with Norman R. Draper], In George E.P. Box, Norman R. Draper, Response Surfaces, Mixtures, and Ridge Analyses (2nd ed. 2007), 414.

Robert_N_Britcher

Testing Large Systems

“Many programmers do an adequate job of testing the logic of a single module. But testing an entire system is another matter. Once a module is absorbed into the mass of programs, running as part of the real world, the nature of testing changes.”
  • Source: Britcher, Robert N. (1999). The Limits of Software: People, Projects, and Perspectives. Reading, MA: Addison Wesley. ISBN 0-201-43323-0. Page 57.

Fred_Brooks

Child Bearing Task Law

“The bearing of a child takes nine months, no matter how many women are assigned. Many software tasks have this characteristic because of the sequential nature of debugging.”
  • Source: Brooks Jr., F. P. (1995). The Mythical Man-Month - Essays on Software Engineering (Anniversary Edition) | 1975/1995 (Anniv.). Boston. MA: Addison-Wesley. ISBN: 0201835959. Chapter 2, page 17.

DeMarco and Lister

People Related Problems

"Whatever you name these people-related problems, they’re more likely to cause you trouble on your next assignment than all the design, implementation, and methodology issues you’ll have to deal with. In fact, that idea is the underlying thesis of this whole book: The major problems of our work are not so much technological as sociological in nature."
  • Source: Book:: Entitled: Peopleware: Productive Projects and Teams. Edition: 3rd. Written by: Tom DeMarco; Tim Lister. Date published: 1987; 1999; 2013. Publisher: Addison-Wesley. Country: USA; GBR; CAN; DEU; FRA; ESP; ZAF; AUS; JPN; SGP; MEX. Language: en. ISBN: ISBN-13: 978-0-321-93411-6 (alk paper); 0-321-93411-3 (alk paper). Chapter: 1 (Somewhere Today, a Project Is Failing).

David_Deutsch

Quantum Computation

“Quantum computation is … nothing less than a distinctly new way of harnessing nature … It will be the first technology that allows useful tasks to be performed in collaboration between parallel universes, and then sharing the results.”

Reinout_Willem_van_Bemmelen

Validity of Hypothesis

“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 ... The author calls such expectations and additional observations the prognosis-diagnosis method of research. Prognosis in science may be termed the prediction of the future finding of corroborative evidence of certain features or phenomena (diagnostic facts). This method of scientific research builds up and extends the relations between the subject and the object by means of a circuit of inductions and deductions.”
  • Source: Reinout Willem van Bemmelen. In 'The Scientific Character of Geology', The Journal of Geology (Jul 1961), 69, No. 4, 454-5.

Robert_Boyle

Good Hypothesis

“The Requisites of a good Hypothesis are:
: That It be Intelligible.
: That It neither Assume nor Suppose anything Impossible, unintelligible, or demonstrably False.
: That It be consistent with Itself.
: That It be lit and sufficient to Explicate the Phaenomena, especially the chief.
: That It be, at least, consistent, with the rest of the Phaenomena It particularly relates to, and do not contradict any other known Phaenomena of nature, or manifest Physical Truth.
 
The Qualities and Conditions of an Excellent Hypothesis are:
: That It be not Precarious, but have sufficient Grounds In the nature of the Thing Itself or at least be well recommended by some Auxiliary Proofs.
: That It be the Simplest of all the good ones we are able to frame, at least containing nothing that is superfluous or Impertinent.
: That It be the only Hypothesis that can Explicate the Phaenomena; or at least, that do's Explicate them so well.
: That it enable a skillful naturalist to foretell future Phaenomena by the Congruity or Incongruity to it; and especially the event of such experiments as are aptly devised to examine It, as Things that ought, or ought not, to be consequent to It.”
  • Source: Robert Boyle, Boyle Papers, 37. Quoted In Barbara Kaplan (ed.), Divulging of Useful Truths in Physick: The Medical Agenda of Robert Boyle (1993), 50.

Fred_Brooks

Software Complexity

“Einstein repeatedly argued that there must be simplified explanations of nature, because God is not capricious or arbitrary. No such faith comforts the software engineer. Much of the complexity he must master is arbitrary complexity, forced without rhyme or reason by the many human institutions and systems to which his interfaces must conform. These differ from interface to interface, and from time to time, not because of necessity but only because they were designed by different people, rather than by God.”
  • Source: Brooks Jr., F. P. (1995). The Mythical Man-Month - Essays on Software Engineering (Anniversary Edition) | 1975/1995 (Anniv.). Boston. MA: Addison-Wesley. ISBN: 0201835959. Chapter 16, page 184.

Nigel_Cross

Conventional Problem Solving

"Conventional wisdom about problem-solving seems often to be contradicted by the behavior of expert designers. But designing has many differences from conventional problem-solving. ... we must be very wary about importing models of design behavior from other fields. Empirical studies of design activity have frequently found 'intuitive' features of design ability to be the most effective and relevant to the intrinsic nature of design. Some aspects of design theory, however, have tried to develop counter-intuitive models and prescriptions for design behavior."

Paul_Davies

Models and Theories and Reality

"Until now, physical theories have been regarded as merely models with approximately describe the reality of nature. As the models improve, so the fit between theory and reality gets closer. Some physicists are now claiming that supergravity is the reality, that the model and the real world are in mathematically perfect accord."
  • Source: P.C.W. Davies, Superforce (1984, 1985), 149.

Albert_Einstein

Art Science Life

“I believe with Schopenhauer that one of the strongest motives that lead men to art and science is escape from everyday life with its painful crudity and hopeless dreariness, from the fetters of one’s own ever shifting desires. A finely tempered nature longs to escape from personal life into the world of objective perception and thought; this desire may be compared with the townsman’s irresistible longing to escape from his noisy, cramped surroundings into the silence of high mountains, where the eye ranges freely through the still, pure air and fondly traces out the restful contours apparently built for eternity.”
  • Source: Words spoken by Albert Einstein in an address to The Physical Society in Berlin in 1918 to honor Max Planck’s 60th birthday, Transcribed into the book 'Essays in Science' in the chapter 'Principles of Research' written by Albert Einstein and translated to english by Alan Harris. Published in 1934 by The Philosophical Library, New York, NY.

Michael_Faraday

Wonderful Dream

“All this is a dream. Still, examine it by a few experiments. Nothing is too wonderful to be true, if it be consistent with the laws of nature; and in such things as these, experiment is the best test of such consistency.”
  • Source: Laboratory/Journal/Writer=Michael Faraday; Entry/Id=#10,040; Entry/Date=1849-03-19; Book/Title=“The Life and Letters of Faraday”; Publication/Date=1870; Volume=II; Page=248; Editor=Henry Bence Jones.
  • Notes: This has sometimes been quoted partially as “Nothing is too wonderful to be true”, and can be seen engraved above the doorway of the south entrance to the Humanities Building at UCLA in Los Angeles, California.

Laws of Nature

“The laws of nature, as we understand them, are the foundation of our knowledge in natural things. So much as we know of them has been developed by the successive energies of the highest intellects, exerted through many ages. After a most rigid and scrutinizing examination upon principle and trial, a definite expression has been given to them; they have become, as it were, our belief or trust. From day to day we still examine and test our expressions of them. We have no interest in their retention if erroneous. On the contrary, the greatest discovery a man could make would be to prove that one of these accepted laws was erroneous, and his greatest honour would be the discovery.”
  • Source: Book/Author=Michael Faraday; Title=“Experimental Researches in Chemistry and Physics”; Publication/Date=1859; Page=469.

Richard_Feynman

Classical Theory

“... I'm not happy with all the analyses that go with just the classical theory, because nature isn't classical, dammit. And if you want to make a simulation of nature, you'd better make it quantum mechanical, and, by golly, it's a wonderful problem because it doesn't look so easy.”
  • Source: Article/Title: “Simulating Physics with Computers”; Journal/Name: International Journal of Theoretical Physics; Volume: 21; Publication/Date: 1982; Page: 486.

Samuel_C_Florman

Emotional Fulfillment

“The nature of engineering has been misconceived. Analysis, rationality, materialism, and practical creativity do not preclude emotional fulfillment; they are pathways to such fulfillment. They do not ‘reduce’ experience, as is so often claimed; they expand it. Engineering is superficial only to those who view it superficially. At the heart of engineering lies existential joy.”
  • Source: From the book “The Existential Pleasures of Engineering” by {Samuel C. Florman}. Second edition published in 1994 by {St. Martin's Press}, New York, NY. First edition published in 1976. Kindle edition published in 2023. E-book ISBN 978-1466842366. Chapter 8, page 101.

Milton_Friedman

Positive Knowledge

“In both social and natural sciences, the body of positive knowledge grows by the failure of a tentative hypothesis to predict phenomena the hypothesis professes to explain; by the patching up of that hypothesis until someone suggests a new hypothesis that more elegantly or simply embodies the troublesome phenomena, and so on ad infinitum. In both, experiment is sometimes possible, sometimes not (witness meteorology). In both, no experiment is ever completely controlled, and experience often offers evidence that is the equivalent of controlled experiment. In both, there is no way to have a self-contained closed system or to avoid interaction between the observer and the observed. The Gödel theorem in mathematics, the Heisenberg uncertainty principle in physics, the self-fulfilling or self-defeating prophecy in the social sciences all exemplify these limitations.”
  • Source: Milton Friedman, Inflation and Unemployment (1976), 348

Galileo

Seek the Truth

“For it is too bad that there are so few who seek the truth and so few who do not follow a mistaken method in philosophy. This is not, however, the place to lament the misery of our century, but to rejoice with you over such beautiful ideas for proving the truth. So I add only, and I promise, that I shall read your book at leisure; for I am certain that I shall find the noblest things in it. And this I shall do the more gladly, because I accepted the view of Copernicus many years ago, and from this standpoint I have discovered from their origins many natural phenomena, which doubtless cannot be explained on the basis of the more commonly accepted hypothesis.”
  • Source: Galileo Galilei, Letter (4 Aug 1597) to Kepler, expressing thanks and interest in the book Kepler sent him. As quoted in translation in Jackson J. Spielvogel, Western Civilization: Alternate Volume: Since 1300 (2010), Vol. 2, 494.

Murray_Gell-Mann

Curiosity

“My colleagues in elementary particle theory in many lands [and I] are driven by the usual insatiable curiosity of the scientist, and our work is a delightful game. I am frequently astonished that it so often results in correct predictions of experimental results. How can it be that writing down a few simple and elegant formulae, like short poems governed by strict rules such as those of the sonnet or the waka, can predict universal regularities of Nature?”
  • Source: Murray Gell-Mann, Nobel Banquet Speech (10 Dec 1969), in Wilhelm Odelberg (ed.),Les Prix Nobel en 1969 (1970).

John_Gribbin

Scientific Method

“The Big Idea that had been developed in the seventeenth century ... is now known as the scientific method. It says that the way to proceed when investigating how the world works is to first carry out experiments and/or make observations of the natural world. Then, develop hypotheses to explain these observations, and (crucially) use the hypothesis to make predictions about the future outcome of future experiments and/or observations. After comparing the results of those new observations with the predictions of the hypotheses, discard those hypotheses which make false predictions, and retain (at least, for the time being) any hypothesis that makes accurate predictions, elevating it to the status of a theory. Note that a theory can never be proved right. The best that can be said is that it has passed all the tests applied so far.”
  • Source: John R. Gribbin. In The Fellowship: the Story of a Revolution (2005), 275.

Sabine_Hossenfelder

Closer Reality

“The foundations of physics give us a closer look at reality, but the closer we look at reality, the more slippery it becomes. Our heavy use of mathematics is a major reason. The more the fundamental descriptions of nature have become divorced from our everyday experience, the more we must rely on mathematical rigor. This reliance has consequences. Using math to describe reality means that the same observations can be equivalently explained in many different ways. That’s just because there are many sets of mathematical axioms that will give the exact same predictions for all available data. Thus, if you want to assign 'reality' to one of your explanations, you won’t know which.”
  • Source: Hossenfelder, Sabine. Existential Physics: A Scientist's Guide to Life's Biggest Questions (p. 74). Penguin Publishing Group. Kindle Edition.

M_King_Hubbert

Principle of Uniformity

“[The] first postulate of the Principle of Uniformity, namely, that the laws of nature are invariant with time, is not peculiar to that principle or to geology, but is a common denominator of all science. In fact, instead of being an assumption or an ad hoc hypothesis, it is simply a succinct summation of the totality of all experimental and observational evidence.”
  • Source: Marion King Hubbert, 'Critique of the Principle of Uniformity', in C. C. Albritton (ed.), Uniformity and Simplicity (1967), 29.

Brooks_Jackson and Kathleen_Hall_Jamieson

Fact Driven

“Humans are not by nature the fact-driven, rational beings we like to think we are. We get the facts wrong more often than we think we do. And we do so in predictable ways: we engage in wishful thinking. We embrace information that supports our beliefs and reject evidence that challenges them. Our minds tend to take shortcuts, which require some effort to avoid ... [and] more often than most of us would imagine, the human mind operates in ways that defy logic.”
  • Source: Brooks Jackson, As co-author with Kathleen Hall Jamieson, in unSpun: Finding Facts in a World of Disinformation (2007), 69.

Carl_Jung

Monad Mandala

“The self, I thought, was like the monad which I am, and which is my world. The mandala represents this monad, and corresponds to the microcosmic nature of the soul... Only when I began to paint the mandalas did I see that all the paths I took, all the steps I made, all led back to the one point, that is, to the center. The mandala became the expression of all paths.”
  • Source: Written by Carl G. Jung in ‘Memories, Dreams, Reflections’; edited by Aniela Jaffe, translated by Clara Winston; First published in German in 1962, an English translation appeared in 1963. Also Published by Vintage in 1989. Page 221. ISBN 978-0679723950.
    • Also reported in ‘The Red Book: Liber Novus: A Reader's Edition’, written by C. G. Jung, edited with an introduction by Sonu Shamdasani, translated by Mark Kyburz, John Peck, and Sonu Shamdasani; published by W. W. Norton in 2012; ISBN 978-0393089080; Page 44-45.

Bernardo_Kastrup

Causality

“We don’t see causality; we only see its manifest consequences in nature’s behavior. Therefore, the underlying organizing principle is metaphysical, instead of physical. It is derived on the basis of induction.”
  • Source: From “Decoding Jung's Metaphysics: The Archetypal Semantics of an Experiential Universe”. Written by Bernardo Kastrup. Published by IFF Books, Washington DC. Kindle Edition. Page 49. Chapter 4.

Global Synchronization

“The possibility of there being a global synchronization mechanism in nature is opened up by quantum mechanics itself.”
  • Source: From “Decoding Jung's Metaphysics: The Archetypal Semantics of an Experiential Universe”. Written by Bernardo Kastrup. Published by IFF Books, Washington DC. Kindle Edition. Page 52. Chapter 4.

Metaphysically Real

“Synchronicity — insofar as it defines the structures or tendencies underlying all quantum events — is the only metaphysically real ordering principle in nature. The laws of nature we are familiar with in our daily lives become mere epiphenomena of archetypal synchronicities.”
  • Source: From “Decoding Jung's Metaphysics: The Archetypal Semantics of an Experiential Universe”. Written by Bernardo Kastrup. Published by IFF Books, Washington DC. Kindle Edition. Page 69. Chapter 4.

John_F_Kennedy

Resources

“Malthus argued a century and a half ago that man, by using up all his available resources, would forever press on the limits of subsistence, thus condemning humanity to an indefinite future of misery and poverty. We can now begin to hope and, I believe, know that Malthus was expressing not a law of nature, but merely the limitation then of scientific and social wisdom. The truth or falsity of his prediction will depend now, with the tools we have, on our own actions, now and in the years to come.”
  • Source: John F. Kennedy, From Address to the Centennial Convocation of the National Academy of Sciences (22 Oct 1963), 'A Century of Scientific Conquest'. Online at The American Presidency Project.

Johannes_Kepler

Physical Causes

“Some physical causes are recognized by all; others, by only very few people; indeed, many things exist naturally, but from causes hitherto known to no man. And of the causes, which we know, there are some whose kind and nature we all usually understand, and others whose kind or indirect cause are understood by very few people, or by nobody.”
  • Source: Johannes Kepler in “Fundamentis. Astrologiae Certioribus - Thesis IV”.

Analogies

“But I especially love analogies, my most faithful masters, acquainted with all the secrets of Nature...”
  • Source: Johannes Kepler in “Ad Vitellionem Paralipomena” (Appendix to Witelo), written in Latin in 1604.

John_Maynard_Keynes

Traditional Purpose

“Thus, we have been expressly evolved by nature — with all our impulses and deepest instincts — for the purpose of solving the economic problem. If the economic problem is solved, mankind will be deprived of its traditional purpose. Will this be a benefit? If one believes at all in the real values of life, the prospect at least opens up the possibility of benefit. Yet I think with dread of the readjustment of the habits and instincts of the ordinary man, bred into him for countless generations, which he may be asked to discard within a few decades.”
  • Source: From the Essay “Economic Possibilities for our Grandchildren” written by John Maynard Keynes in 1930. Included in the book “Essays in Persuasion” edited by John Maynard Keynes and published by W. W. Norton & Company in 1963.

David_Kipping

Nature Computation

“It is important to distinguish between testing whether the universe is built upon the principles of computation but is not a simulation versus testing where the universe is indeed a simulation on someone's computer. Those are different to each other. It is quite possible that the laws of computation are somehow embedded within nature and yet everything we see around us is not a simulation.”
  • Source: David Kipping from the YouTube “Why You're Probably Not a Simulation”, posted 2020-09-04 in the channel ‘Cool Worlds’. Video offset 11:15. Online at https://youtu.be/HA5YuwvJkpQ (2025).

Lawrence_M_Krauss

Think the Unthinkable

“Science has taught us to think the unthinkable. Because when nature is the guide—rather than a priori prejudices, hopes, fears or desires — we are forced out of our comfort zone. One by one, pillars of classical logic have fallen by the wayside as science progressed in the 20th century, from Einstein's realization that measurements of space and time were not absolute but observer-dependent, to quantum mechanics, which not only put fundamental limits on what we can empirically know but also demonstrated that elementary particles and the atoms they form are doing a million seemingly impossible things at once.”
  • Source: Lawrence M. Krauss, In op-ed, 'A Universe Without Purpose', Los Angeles Times (1 Apr 2012).

Pierre-Simon_Laplace

System of Nature

“The present state of the system of nature is evidently a consequence of what it was in the preceding moment, and if we conceive of an intelligence that at a given instant comprehends all the relations of the entities of this universe, it could state the respective position, motions, and general affects of all these entities at any time in the past or future. Physical astronomy, the branch of knowledge that does the greatest honor to the human mind, gives us an idea, albeit imperfect, of what such an intelligence would be. The simplicity of the law by which the celestial bodies move, and the relations of their masses and distances, permit analysis to follow their motions up to a certain point; and in order to determine the state of the system of these great bodies in past or future centuries, it suffices for the mathematician that their position and their velocity be given by observation for any moment in time. Man owes that advantage to the power of the instrument he employs, and to the small number of relations that it embraces in its calculations. But ignorance of the different causes involved in the production of events, as well as their complexity, taken together with the imperfection of analysis, prevents our reaching the same certainty about the vast majority of phenomena. Thus there are things that are uncertain for us, things more or less probable, and we seek to compensate for the impossibility of knowing them by determining their different degrees of likelihood. So it was that we owe to the weakness of the human mind one of the most delicate and ingenious of mathematical theories, the science of chance or probability.”
  • Source: Pierre-Simon Laplace, 'Recherches, 1º, sur l'Intégration des Équations Différentielles aux Différences Finies, et sur leur Usage dans la Théorie des Hasards' (1773, published 1776). In Oeuvres complètes de Laplace, 14 Vols. (1843-1912), Vol. 8, 144-5, trans. Charles Coulston Gillispie, Pierre-Simon Laplace 1749-1827: A Life in Exact Science (1997), 26.

Peter_Medawar

Scientific Creativity

“To be creative, scientists need libraries and laboratories and the company of other scientists; certainly, a quiet and untroubled life is a help. A scientist's work is in no way deepened or made more cogent by privation, anxiety, distress, or emotional harassment. To be sure, the private lives of scientists may be strangely and even comically mixed up, but not in ways that have any special bearing on the nature and quality of their work. If a scientist were to cut off an ear, no one would interpret such an action as evidence of an unhappy torment of creativity; nor will a scientist be excused any bizarrerie, however extravagant, on the grounds that he is a scientist, however brilliant.”
  • Source: Sir Peter B. Medawar, In Advice to a Young Scientist (1979), 40

Isaac_Newton

Analysis

“As in Mathematicks, so in Natural Philosophy, the Investigation of difficult Things by the Method of Analysis, ought ever to precede the Method of Composition. This Analysis consists in making Experiments and Observations, and in drawing general Conclusions from them by Induction, and admitting of no Objections against the Conclusions, but such as are taken from Experiments, or other certain Truths. For Hypotheses are not to be regarded in experimental Philosophy.”
  • Source: Sir Isaac Newton, From Opticks, (1704, 2nd ed. 1718), Book 3, Query 31, 380.

J_Robert_Oppenheimer

Science Starts with Preconception

“Science starts with preconception, with the common culture, and with common sense. It moves on to observation, is marked by the discovery of paradox, and is then concerned with the correction of preconception. It moves then to use these corrections for the designing of further observation and for more refined experiment. And as it moves along this course the nature of the evidence and experience that nourish it becomes more and more unfamiliar; it is not just the language that is strange [to common culture].”
  • Source: J. Robert Oppenheimer, From 'The Growth of Science and the Structure of Culture', Daedalus (Winter 1958), 87, No. 1, 67.

Blaise_Pascal

Pascal's Wager

“A game is on, at the other end of this infinite distance, and heads or tails will turn up. What will you wager? According to reason you cannot leave either; according to reason you cannot leave either undone... Yes, but wager you must; there is no option, you have embarked on it. So which will you have. Come. Since you must choose, let us see what concerns you least. You have two things to lose: truth and good, and two things to stake: your reason and your will, your knowledge and your happiness. And your nature has two things to shun: error and misery. Your reason does not suffer by your choosing one more than the other, for you must choose. That is one point cleared. But your happiness? Let us weigh gain and loss in calling heads that God is. Reckon these two chances: if you win, you win all; if you lose, you lose naught. Then do not hesitate, wager that He is.”
  • Source: Blaise Pascal, Pensées (1670), Section I, aphorism 223. In H. F. Stewart (ed.), Pascal's Pensées (1950), 117-119.

Richard_Pascale

Unintended Consequences

“Unintended consequences get to the heart of why you never really understand an adaptive problem until you have solved it. Problems morph and ‘solutions’ often point to deeper problems. In social life, as in nature, we are walking on a trampoline. Every inroad reconfigures the environment we tread on.”
  • Source: Richard T. Pascale, Jerry Sternin, Monique Sternin (2010). “The Power of Positive Deviance: How Unlikely Innovators Solve the World's Toughest Problems”, p.192, Boston, MA: Harvard Business Press

Alan_Perlis

Balance Efficiency and Generality

“Our progress, then, is measured by the balance we achieve between efficiency and generality. As the nature of our involvement with computation changes — and it does — the appropriate description of language changes; our emphasis shifts. I feel that our successor model will show such a change. Computer science is a restless infant and its progress depends as much on shifts in point of view as on the orderly development of our current concepts.”


Steven_Pinker

Neurons to Consciousness

“None of us has a brain that can actually put us in touch with reality unaided with truth. I've just shown you a bunch of gadgetry that responds to things that are essential to our survival, things that prevent us from falling off cliffs and bumping into trees. But they don't actually correspond to any clear description of the world as it is. So we have, for example, circuitry that responds to the edges rather than the physical distribution of light, because edges are important, that's where objects leave off and their backgrounds begin. Moreover, they can be fooled, as I did with each one of you. That since our neural circuitry does consist of a mechanism, not a pipeline to the truth or a window onto objective reality. That is naïve realism we know is false because there are illusions. You can't just trust your senses. That means we need some way of augmenting the faculties that nature gave us to make our beliefs as accurate as possible. Which of course is why the early modern philosophers made such a big deal of visual illusions. They said you can't just open your eyes and see the world as it is. Look at all these illusions. So what we do, what gives some of us confidence that our beliefs are objectively true is that they are part of an institutional infrastructure of testing and criticism and logic and determining which hypotheses withstand criticism and attempts at refutation. Devising exotic arrangements of reality to reflect the way reality is put together, namely experiments. Thanks to this huge network of minds, each one of them making up for deficits of all the others, we like to think that we have a collective grasp on truth that none of us individually can have. But of course, it's always fallible. The religious beliefs I think were actually pretty reasonable hypotheses in earlier states of our collective knowledge. Even Richard Dawkins said that before Darwin he probably would have been a creationist because the cosmic engineer was the only available explanation for the obvious adaptive complexity of living things. I would add that prior to the advent of modern neuroscience I probably would have believed in souls because there was no better explanation for phenomena such as that people respond intelligently to their environments. When you dream some part of you is up and about the world while your body is in bed the whole time. That seems like there must be some part of you that can leave your body. When a person suddenly dies some kind of animating force no longer seems to be animating the body that was there just a few minutes ago. So the soul hypothesis is not a stupid or irrational belief, nor is creationism if it's the best that you have. Now, of course, we can do better. But doing better in part depends not just on this cumulative weight of evidence and argument. But because few of us can actually reconstruct the scientific observations that justify the theory of natural selection or the theory of neural networks, all of us, at least a little bit, take it on faith in the following sense; that there is a community that you trust enough because when they have been challenged to defend their beliefs they can connect them to reality. They have shown that it isn't magic. That they have given reason to trust them because they've convinced you that they're the mores of their culture, of their scientific culture, designed so that they will find true things and weed out false things. If you don't have a degree of solidarity or trust, if you think that scientists are all in cahoots with big corporations or are trying to tear down all faith and values and meaning and you simply refuse to follow through the very long chain of deduction that connects the claims to the experiments, then you'll naturally reject it just because it's not your tribe. For you and me scientists are our tribe and we're apt to give them some credibility, indeed some credulousness, knowing that if ever challenged it would be repaid. But unless you trace that through it can be all too easy to reject the conclusions of science, and indeed a number of studies have shown that contrary to the common belief that people believe in falsehoods, such as that vaccines cause autism or that humans were created five thousand years ago or that the burning of fossil fuels has no effect on global temperatures, it turns out that people with those beliefs that we have every reason to believe are false are no more scientifically naïve on average than people that have beliefs that are scientifically justified. You give a test on evolution to a bunch of people who believe in evolution, give it to a bunch of creationists, there's not much difference in how well they score. In fact, often they are equal. Likewise, the typical grasp of climate science among someone who signs on to the scientific consensus is not much better than the adamant deniers. That kind of dashes the hope that simply by increasing the quality of science education you will lead people to more accurate beliefs. There, in addition, has to be a dissociation of who you think are the good guys and who are the bad guys from who has the best claims to truth. That's what it depends on.”

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Michael_Polanyi

Scientific Method Elucidation

“Almost every major systematic error which has deluded men for thousands of years relied on practical experience. Horoscopes, incantations, oracles, magic, witchcraft, the cures of witch doctors and of medical practitioners before the advent of modern medicine, were all firmly established through the centuries in the eyes of the public by their supposed practical successes. The scientific method was devised precisely for the purpose of elucidating the nature of things under more carefully controlled conditions and by more rigorous criteria than are present in the situations created by practical problems.”
  • Source: Michael Polanyi, Personal Knowledge (1958), 183.

Karl_Popper

Science Not Certain

“Science is not a system of certain, or established, statements; nor is it a system which steadily advances towards a state of finality... And our guesses are guided by the unscientific, the metaphysical (though biologically explicable) faith in laws, in regularities which we can uncover — discover. Like Bacon, we might describe our own contemporary science — 'the method of reasoning which men now ordinarily apply to nature' — as consisting of 'anticipations, rash and premature' and as 'prejudices'.”
  • Source: Karl Raimund Popper, The Logic of Scientific Discovery (1959), 278.

Ptolemy

Trace the Windings

“I know that I am mortal by nature and ephemeral, but when I trace at my pleasure the windings to and fro of the heavenly bodies, I no longer touch earth with my feet. I stand in the presence of Zeus himself and take my fill of ambrosia.”
  • Source: Ptolemy. Almagest. Quoted in Owen Gingerich, The Eye of Heaven: Ptolemy, Copernicus, Kepler, American Institute of Physics, 1993, p. 55).

Hans_Reichenbach

Picture of Scientific Method

“The picture of scientific method drafted by modern philosophy is very different from traditional conceptions. Gone is the ideal of a universe whose course follows strict rules, a predetermined cosmos that unwinds itself like an unwinding clock. Gone is the ideal of the scientist who knows the absolute truth. The happenings of nature are like rolling dice rather than like revolving stars; they are controlled by probability laws, not by causality, and the scientist resembles a gambler more than a prophet. He can tell you only his best posits — he never knows beforehand whether they will come true. He is a better gambler, though, than the man at the green table, because his statistical methods are superior. And his goal is staked higher — the goal of foretelling the rolling dice of the cosmos. If he is asked why he follows his methods, with what title he makes his predictions, he cannot answer that he has an irrefutable knowledge of the future; he can only lay his best bets. But he can prove that they are best bets, that making them is the best he can do — and if a man does his best, what else can you ask of him?”
  • Source: Hans Reichenbach, The Rise of Scientific Philosophy (1951, 1973), 248-9. Collected in James Louis Jarrett and Sterling M. McMurrin (eds.), Contemporary Philosophy: A Book of Readings (1954), 376.

Frank_H_T_Rhodes

Facts

“There are no such things as ‘facts’ labelled in nature.”
  • Source: Frank H. T. Rhodes in the essay “Christianity in a Mechanistic Universe”, included in the book “Christianity in a Mechanistic Universe and Other Essays” edited by Donald M. MacKay, published by Inter-Varsity Press, Chicago, Illinois, in 1965.

Rittel_and_Webber

Wicked Problems

“The search for scientific bases for confronting problems of social policy is bound to fail, because of the nature of these problems. They are 'wicked' problems, whereas science has developed to deal with 'tame' problems.”

Bertrand_Russell

Fed the Chicken

“The man who has fed the chicken every day throughout its life at last wrings its neck instead, showing that more refined views as to the uniformity of nature would have been useful to the chicken.”
  • Source: Bertrand Russell, (1912), In the book entitled “The Problems of Philosophy” by Bertrand Russell. Second edition published in 1998 (originally published in 1912) by Oxford University Press, Oxford, England. Chapter 6. ISBN 978-0-19-285423-0. Online at <https://www.gutenberg.org/ebooks/5827> retrieved 2022.

Carl_Sagan

Natural Born Scientist

“Every kid starts out as a natural-born scientist, and then we beat it out of them. A few trickle through the system with their wonder and enthusiasm for science intact.”
  • Source: Carl Sagan, Quoted in interview with magazine staff, Psychology Today (Jan 1996).

George_Sarton

Scientific Progress

“No history of civilization can be tolerably complete which does not give considerable space to the explanation of scientific progress. If we had any doubts about this, it would suffice to ask ourselves what constitutes the essential difference between our and earlier civilizations. Throughout the course of history, in every period, and in almost every country, we find a small number of saints, of great artists, of men of science. The saints of today are not necessarily more saintly than those of a thousand years ago; our artists are not necessarily greater than those of early Greece; they are more likely to be inferior; and of course, our men of science are not necessarily more intelligent than those of old; yet one thing is certain, their knowledge is at once more extensive and more accurate. The acquisition and systematization of positive knowledge is the only human activity which is truly cumulative and progressive. Our civilization is essentially different from earlier ones, because our knowledge of the world and of ourselves is deeper, more precise, and more certain, because we have gradually learned to disentangle the forces of nature, and because we have contrived, by strict obedience to their laws, to capture them and to divert them to the gratification of our own needs.”
  • Source: George (Alfred Léon) Sarton, Introduction to the History of Science (1927), Vol. 1, 3-4.

Erwin_Schrödinger

Quantum Discreteness

“The great revelation of quantum theory was that features of discreteness were discovered in the Book of Nature.”
  • Source: Erwin Schrödinger in the book “What is Life?”, chapter 4. Contained within the anthology “What is Life? The Physical Aspect of the Living Cell with Mind and Matter and Autobiographical Sketches”. Published in 1992 and reprinted in 2013 by Cambridge University Press, New York, NY. ISBN: 9781107604667. Online at <http://strangebeautiful.com/other-texts/schrodinger-what-is-life-mind-matter-auto-sketches.pdf> retrieved 2024. Note: “What is Life?” originally published separately in 1944.

Measurement and Observation

“The state of affairs... is often described by saying that, as the technique of measuring is refined, the observer is gradually replaced by more and more elaborate apparatus. Now this is, certainly in the present case, not true; he is not gradually replaced, but is so from the outset... The observer's colourful impression of the phenomenon vouchsafes not the slightest clue to its physical nature.”
  • Source: Erwin Schrödinger in the book “Mind and Matter”, chapter 6. Contained within the anthology “What is Life? The Physical Aspect of the Living Cell with Mind and Matter and Autobiographical Sketches”. Published in 1992 and reprinted in 2013 by Cambridge University Press, New York, NY. ISBN: 9781107604667. Online at <http://strangebeautiful.com/other-texts/schrodinger-what-is-life-mind-matter-auto-sketches.pdf> retrieved 2024. Note: “Mind and Matter” originally published separately in 1944.

Objective Nature

“While the direct sensual perception of the phenomenon tells us nothing as to its objective physical nature (or what we usually call so) and has to be discarded from the outset as a source of information, yet the theoretical picture we obtain eventually rests entirely on a complicated array of various informations, all obtained by direct sensual perception. It resides upon them, it is pieced together from them, yet it cannot really be said to contain them. In using the picture we usually forget about them, except in the quite general way that we know our idea of a light-wave is not a haphazard invention of a crank but is based on experiment.”
  • Source: Erwin Schrödinger in the book “Mind and Matter”, chapter 6. Contained within the anthology “What is Life? The Physical Aspect of the Living Cell with Mind and Matter and Autobiographical Sketches”. Published in 1992 and reprinted in 2013 by Cambridge University Press, New York, NY. ISBN: 9781107604667. Online at <http://strangebeautiful.com/other-texts/schrodinger-what-is-life-mind-matter-auto-sketches.pdf> retrieved 2024. Note: “Mind and Matter” originally published separately in 1944.

Melvin_Schwartz

Mathematics More than a Language

“Mathematics is much more than a language for dealing with the physical world. It is a source of models and abstractions which will enable us to obtain amazing new insights into the way in which nature operates. Indeed, the beauty and elegance of the physical laws themselves are only apparent when expressed in the appropriate mathematical framework.”
  • Source: Melvin Schwartz, In Principles of Electrodynamics (1972, 1987), 105.

Rupert_Sheldrake

Empirical Approach

“Science needs to be liberated from these constrictive dogmas of mechanistic materialism... If we go beyond those dogmas, science gets much more interesting. All sorts of new research become possible. New questions can be asked. We can find out more about nature and more about consciousness by doing science in a new more open way. But what remains part of science so crucial to it is the empirical approach. The putting forward of hypotheses, the critical discussion, and the testing of hypotheses by experiment, the scientific method.”
  • Source: Rupert Sheldrake. The video “Nature's Hidden Intelligence: Morphic Fields”. Online at https://youtu.be/qrIlWrGe4w4?t=4894. Posted 2025-01-03. Video offset 1:21:34.

Baruch_Spinoza

Nature, Gods, and Men All Mad

“They only seem to have demonstrated that nature, the gods, and men are all mad together.”

Gerald_Weinberg

Knowledge Came Slowly

“In ages past, the knowledge came very slowly, and one man in his life was not likely to see much change other than that wrought by nature. The controlled incorporation of arsenic into copper to make bronze took several thousand years to develop; the substitution of tin for the more dangerous arsenic took another thousand or two. In our modern age, laboratories turn out an alloy a day, or more, with properties made to order. The alloying of metals led to the rise and fall of civilizations, but the changes were too slow to be appreciated. A truer blade meant victory over the invaders, but changes were local and slow enough to be absorbed by a million tiny adjustments without destroying the species. With an alloy a day, we can no longer be sure. Science and engineering have been the catalysts for the unprecedented speed and magnitude of change. The physicist shows us how to harness the power of the nucleus; the chemist shows us how to increase the quantity of our food; the geneticist shows us how to improve the quality of our children. But science and engineering have been unable to keep pace with the second-order effects produced by their first-order victories. The excess heat from the nuclear generator alters the spawning pattern of fish, and, before adjustments can be made, other species have produced irreversible changes in the ecology of the river and its borders. The pesticide eliminates one insect only to the advantage of others that may be worse, or the herbicide clears the rain forest for farming, but the resulting soil changes make the land less productive than it was before. And of what we are doing to our progeny, we still have only ghastly hints. Some have said the general systems movement was born out of the failures of science, but it would be more accurate to say the general systems approach is needed because science has been such a success. Science and technology have colonized the planet, and nothing in our lives is untouched. In this changing, they have revealed a complexity with which they are not prepared to deal. The general systems movement has taken up the task of helping scientists unravel complexity, technologists to master it, and others to learn to live with it.”
  • Source: Weinberg, Gerald (2011-04-07). An Introduction to General Systems Thinking (Kindle Locations 264-267). Weinberg & Weinberg. Kindle Edition.

Allen_Wheelis

Science Accuracy Certainty

“Science would have us believe that such accuracy, leading to certainty, is the only criterion of knowledge, would make the trial of Galileo the paradigm of the two points of view which aspire to truth, would suggest, that is, that the cardinals represent only superstition and repression, while Galileo represents freedom. But there is another criterion which is systematically neglected in this elevation of science. Man does not now — and will not ever — live by the bread of scientific method alone. He must deal with life and death, with love and cruelty and despair, and so must make conjectures of great importance which may or may not be true and which do not lend themselves to experimentation: It is better to give than to receive; Love thy neighbor as thyself; Better to risk slavery through non-violence than to defend freedom with murder. We must deal with such propositions, must decide whether they are true, whether to believe them, whether to act on them — and scientific method is no help for by their nature these matters lie forever beyond the realm of science.”
  • Source: Allen Wheelis, In The End of the Modern Age (1973), 89.

William_Whewell

Mask of Theory

“There is a mask of theory over the whole face of nature, if it be theory to infer more than we see.”

E_O_Wilson

Self-Knowledge

“Self-knowledge will reveal the elements of biological human nature from which modern social life proliferated in all its strange forms.”
  • Source: Chapter 4 (Emergence). On Human Nature (1978). On Human Nature; written by Edward O. Wilson; first edition; published in 1978 by Cambridge University Press; ISBN 0674634411.

Stephen_Wolfram

Paradigm Change

“When you change the paradigm, lots of stuff can come out. In science, the biggest paradigm change that's already happened... which is model things in nature with programs not with equations. For 300 years there was this tradition that [if] you want to make a model in science that's an exact model, write down a mathematical equation. People don't do that anymore in most areas of science... It's fun to see this transition from what seems impossible to what becomes obvious.”
  • Source: Spoken by Stephen Wolfram in a video interview with Brian Keating recorded in the YouTube video ‘What is Time? Stephen Wolfram’s Groundbreaking New Theory’ published on channel ‘Dr. Brian Keating’ on 2024-12-02. Video offset 1:13:57. Online at https://youtu.be/c-RO3vM10Ok?si=i-XspeEtzqA3jPl9 retrieved 2024.

Computational Irreducibility

“I’ve increasingly come to view the whole fundamental story of science as being about the interplay between computational irreducibility and computational reducibility. The computational nature of things inevitably leads to computational irreducibility. But there are slices of computational reducibility that inevitably exist on top of this irreducibility that are what make it possible for us — as computationally bounded entities — to identify meaningful scientific laws and to do science.”