„I have not been able to discover the cause of those properties of gravity from phenomena, and I frame no hypotheses;“

Letter to Robert Hooke (15 February 1676)
Contexte: I have not been able to discover the cause of those properties of gravity from phenomena, and I frame no hypotheses; for whatever is not deduced from the phenomena is to be called a hypothesis, and hypotheses, whether metaphysical or physical, whether of occult qualities or mechanical, have no place in experimental philosophy.

Isaac Newton photo
Isaac Newton5
philosophe, mathématicien, physicien, alchimiste, astronome… 1643 - 1727

Citations similaires

Isaac Newton photo

„I frame no hypotheses.“

—  Isaac Newton, livre Philosophiae Naturalis Principia Mathematica

Philosophiæ Naturalis Principia Mathematica (1687)
Original: (sv) Hypotheses non fingo.

A famous statement in the "General Scholium" of the third edition, indicating his belief that the law of universal gravitation was a fundamental empirical law, and that he proposed no hypotheses on how gravity could propagate.

Variant translation: I feign no hypotheses.

As translated by Alexandre Koyré (1956)

I have not as yet been able to discover the reason for these properties of gravity from phenomena, and I do not feign hypotheses. For whatever is not deduced from the phenomena must be called a hypothesis; and hypotheses, whether metaphysical or physical, or based on occult qualities, or mechanical, have no place in experimental philosophy. In this philosophy particular propositions are inferred from the phenomena, and afterwards rendered general by induction.

As translated by I. Bernard Cohen and Anne Whitman (1999)

Willem de Sitter photo
Carl Linnaeus photo

„I have been not been able to discover any character by which man can be distinguished from the ape“

—  Carl Linnaeus Swedish botanist, physician, and zoologist 1707 - 1778

Fauna Suecica (1746) as quoted by Jeffrey H. Schwartz, Sudden Origins: Fossils, Genes, and the Emergence of Species (1999)
Contexte: As a natural historian according to the principles of science, up to the present time I have been not been able to discover any character by which man can be distinguished from the ape; for there are somewhere apes which are less hairy than man, erect in position, going just like him on two feet, and recalling the human species by the use they make of their hands and feet, to such an extent, that the less educated travellers have given them out as a kind of man.

Christiaan Huygens photo
William John Macquorn Rankine photo

„In thermodynamics as well as in other branches of molecular physics, the laws of phenomena have to a certain extent been anticipated, and their investigation facilitated, by the aid of hypotheses as to occult molecular structures and motions with which such phenomena are assumed to be connected.“

—  William John Macquorn Rankine civil engineer 1820 - 1872

Source: A Manual of the Steam Engine and Other Prime Movers (1859), p. 31
Contexte: Hypothesis Of Molecular Vortices. In thermodynamics as well as in other branches of molecular physics, the laws of phenomena have to a certain extent been anticipated, and their investigation facilitated, by the aid of hypotheses as to occult molecular structures and motions with which such phenomena are assumed to be connected. The hypothesis which has answered that purpose in the case of thermodynamics, is called that of "molecular vortices," or otherwise, the "centrifugal theory of elasticity. (On this subject, see the Edinburgh Philosophical Journal, 1849; Edinburgh Transactions, vol. xx.; and Philosophical Magazine, passim, especially for December, 1851, and November and December, 1855.)

Isaac Newton photo

„Later Philosophers banish the Consideration of such a Cause out of natural Philosophy, feigning Hypotheses for explaining all things mechanically, and referring other Causes to Metaphysicks: Whereas the main Business of natural Philosophy is to argue from Phenomena without feigning Hypotheses, and to deduce Causes from Effects, till we come to the very first Cause, which certainly is not mechanical.“

—  Isaac Newton, livre Opticks, or a Treatise of the Reflections, Refractions, Inflections and Colours of Light

Query 28 : Are not all Hypotheses erroneous in which Light is supposed to consist of Pression or Motion propagated through a fluid medium?
Opticks (1704)
Contexte: To make way for the regular and lasting Motions of the Planets and Comets, it's necessary to empty the Heavens of all Matter, except perhaps some very thin Vapours, Steams or Effluvia, arising from the Atmospheres of the Earth, Planets and Comets, and from such an exceedingly rare Æthereal Medium … A dense Fluid can be of no use for explaining the Phænomena of Nature, the Motions of the Planets and Comets being better explain'd without it. It serves only to disturb and retard the Motions of those great Bodies, and make the frame of Nature languish: And in the Pores of Bodies, it serves only to stop the vibrating Motions of their Parts, wherein their Heat and Activity consists. And as it is of no use, and hinders the Operations of Nature, and makes her languish, so there is no evidence for its Existence, and therefore it ought to be rejected. And if it be rejected, the Hypotheses that Light consists in Pression or Motion propagated through such a Medium, are rejected with it.
And for rejecting such a Medium, we have the authority of those the oldest and most celebrated philosophers of ancient Greece and Phoenicia, who made a vacuum and atoms and the gravity of atoms the first principles of their philosophy, tacitly attributing Gravity to some other Cause than dense Matter. Later Philosophers banish the Consideration of such a Cause out of natural Philosophy, feigning Hypotheses for explaining all things mechanically, and referring other Causes to Metaphysicks: Whereas the main Business of natural Philosophy is to argue from Phenomena without feigning Hypotheses, and to deduce Causes from Effects, till we come to the very first Cause, which certainly is not mechanical.

Jane Seymour photo

„Over the years, I’ve learnt that out of challenge comes opportunity and I know if I hadn’t been tested, I wouldn’t have pushed myself or been able to discover my abilities.“

—  Jane Seymour English-American actress 1951

On meeting the challenges that life brings in “Interview: Jane Seymour on finding love again at 64” https://www.scotsman.com/arts-and-culture/film-and-tv/interview-jane-seymour-on-finding-love-again-at-64-1-3911978 in The Scotsman (2015 Oct 10)

Lee Smolin photo
Larry Correia photo
Nicolaus Copernicus photo

„All these phenomena proceed from the same cause, which is the earth's motion.
Yet none of these phenomena appears in the fixed stars.“

—  Nicolaus Copernicus, livre De revolutionibus orbium coelestium

End of Ch. 10<!-- quoted in The Advancement of Science, and Its Burdens (1986) by p. 232 -->; the "Congregation of the Index" (the official inquisition censors) declared<!-- on 15 May 1620 --> that the last sentence of this statement was one of eleven passages which should be removed from the work, in this case because it was perceived as implying that God designed things in accord with the Copernican system, rather than that of Ptolemy.
De revolutionibus orbium coelestium (1543)
Contexte: The forward and backward arcs appear greater in Jupiter than in Saturn and smaller than in Mars, and on the other hand greater in Venus than in Mercury. This reversal in direction appears more frequently in Saturn than in Jupiter, and also more rarely in Mars and Venus than in Mercury. Moreover, when Saturn, Jupiter, and Mars rise at sunset, they are nearer to the earth than when they set in the evening or appear at a later hour. But Mars in particular, when it shines all night, seems to equal Jupiter in size, being distinguished only by its reddish color. Yet in the other configurations it is found barely among the stars of the second magnitude, being recognized by those who track it with assiduous observations. All these phenomena proceed from the same cause, which is the earth's motion.
Yet none of these phenomena appears in the fixed stars. This proves their immense height, which makes even the sphere of the annual motion, or its reflection, vanish from before our eyes. For, every visible object has some measure of distance beyond which it is no longer seen, as is demonstrated in optics. From Saturn, the highest of the planets, to the sphere of the fixed stars there is an additional gap of the largest size. This is shown by the twinkling lights of the stars. By this token in particular they are distinguished from the planets, for there had to be a very great difference between what moves and what does not move. So vast, without any question, is the divine handiwork of the most excellent Almighty.

Pedro Muñoz Seca photo

„Alas, I was wrong when I spoke those word: you are so skilled that you have been able to take even my fear away.“

—  Pedro Muñoz Seca Spanish writer 1879 - 1936

Said shortly afterwards during the trial.
Source: http://www.abc.es/20081104/opinion-firmas/mataron-munoz-seca-20081104.html

Osamu Dazai photo
Jay Gould photo
Paul Klee photo
Henry Fielding photo
Vanna Bonta photo

„Having personally kissed in zero gravity, I was initially amazed by the unexpected lack of attraction, from the sheer perspective of the mass magnetism.“

—  Vanna Bonta Italian-American writer, poet, inventor, actress, voice artist (1958-2014) 1958 - 2014

Source: Zero Gravity interview (2006), p. 29

Jolin Tsai photo

„Because I have been exploring some social and mental phenomena related to females in recent years now I have a lot to say to girls.“

—  Jolin Tsai Taiwanese singer, songwriter, and actress 1980

C-Pop Star Jolin Tsai on LGBTQ+ Representation in Her Music: 'I Am Just Following My Heart', Billboard, 2017-6-28 https://www.billboard.com/articles/news/pride/7849254/jolin-tsai-on-lgbtq-representation-in-her-music,

Democritus photo

„[I would] rather discover one cause than gain the kingdom of Persia.“

—  Democritus Ancient Greek philosopher, pupil of Leucippus, founder of the atomic theory

Freeman (1948), p. 155
Durant (1939),Ch. XVI, §II, p. 352, citinas G.Grote, Plato and the Other Companions of Socrates (London, 1875), vol. 1, p. 68; and citing C. Bakewell, Sourcebook in Ancient Philosophy, New York, 1909, p. 62.
Variante: I would rather discover a single demonstration [in geometry] than become king of the Persians.

Prem Rawat photo

„Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Etiam egestas wisi a erat. Morbi imperdiet, mauris ac auctor dictum.“