Isaac Newton citations
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Isaac Newton est un physicien, mathématicien, philosophe, alchimiste, astronome et théologien anglais, puis britannique. Figure emblématique des sciences, il est surtout reconnu pour avoir fondé la mécanique classique, pour sa théorie de la gravitation universelle et la création, en concurrence avec Gottfried Wilhelm Leibniz, du calcul infinitésimal.

En optique, il a développé une théorie de la couleur basée sur l'observation selon laquelle un prisme décompose la lumière blanche en un spectre visible. Il a aussi inventé le télescope à réflexion composé d'un miroir primaire concave appelé télescope de Newton.

En mécanique, il a établi les trois lois universelles du mouvement qui constituent en fait des principes à la base de la grande théorie de Newton concernant le mouvement des corps, théorie que l'on nomme aujourd'hui « mécanique newtonienne » ou encore « mécanique classique ».

Il est aussi connu pour la généralisation du théorème du binôme et l'invention dite de la méthode de Newton permettant de trouver des approximations d'un zéro d'une fonction d'une variable réelle à valeurs réelles.

Newton a montré que le mouvement des objets sur Terre et des corps célestes sont gouvernés par les mêmes lois naturelles ; en se basant sur les lois de Kepler sur le mouvement des planètes, il développa la loi universelle de la gravitation.

Son ouvrage Philosophiæ Naturalis Principia Mathematica,, publié en 1687, est considéré comme une œuvre majeure dans l'histoire des sciences. C'est dans celui-ci qu'il décrit la loi universelle de la gravitation, formule les trois lois universelles du mouvement et jette les bases de la mécanique classique. Il a aussi effectué des recherches dans les domaines de la théologie et de l'alchimie. Wikipedia  

✵ 4. janvier 1643 – 31. mars 1727   •   Autres noms Sir Isaac Newton
Isaac Newton photo
Isaac Newton: 176   citations 0   J'aime

Isaac Newton citations célèbres

“Les noms de quantité, de durée et d'espace sont trop connus pour pouvoir être définis par d'autres mots.”

Nomina quantitatis, durationis et spatij notiora sunt quam ut per alias voces definiri possint.
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“Les corps qui se touchent exercent les uns sur les autres une pression égale.”

Contingentia corpora se mutuo aequaliter premunt.
la
De gravitatione est un manuscrit de jeunesse d'Isaac Newton critiquant Principes de la philosophie (1644) de René Descartes et définissant les concepts et principes mathématiques de la philosophie naturelle (1687), traduits en 1758 par la Marquise du Châtelet , qui ont fondé la théorie de la gravitation universelle.

Cette traduction est en attente de révision. Est-ce correct?

Isaac Newton: Citations en anglais

“Truth is ever to be found in simplicity, and not in the multiplicity and confusion of things.”

Cited in Rules for methodizing the Apocalypse, Rule 9, from a manuscript published in The Religion of Isaac Newton (1974) by Frank E. Manuel, p. 120, as quoted in Socinianism And Arminianism : Antitrinitarians, Calvinists, And Cultural Exchange in Seventeenth-Century Europe (2005) by Martin Mulsow, Jan Rohls, p. 273.
As quoted in God in the Equation : How Einstein Transformed Religion (2002) by Corey S. Powell, p. 29
Variante: Truth is ever to be found in the simplicity, and not in the multiplicity and confusion of things.

“This most beautiful System of the Sun, Planets and Comets, could only proceed from the counsel and dominion of an intelligent and powerful being.”

Isaac Newton livre Philosophiae Naturalis Principia Mathematica

Philosophiae Naturalis Principia Mathematica (1687), Scholium Generale (1713; 1726)
Source: The Principia: Mathematical Principles of Natural Philosophy
Contexte: This most beautiful System of the Sun, Planets and Comets, could only proceed from the counsel and dominion of an intelligent and powerful being. And if the fixed Stars are the centers of other like systems, these being form'd by the like wise counsel, must be all subject to the dominion of One; especially, since the light of the fixed Stars is of the same nature with the light of the Sun, and from every system light passes into all the other systems. And lest the systems of the fixed Stars should, by their gravity, fall on each other mutually, he hath placed those Systems at immense distances one from another.

“To every action there is always opposed an equal reaction”

Isaac Newton livre Philosophiae Naturalis Principia Mathematica

Laws of Motion, III
Philosophiae Naturalis Principia Mathematica (1687)
Contexte: To every action there is always opposed an equal reaction; or, the mutual actions of two bodies upon each other are always equal, and directed to contrary parts.

“Tact is the knack of making a point without making an enemy.”

Actually a statement by American advertising executive and author Howard W. Newton (1903–1951); attributions to Isaac are relatively recent, those to Howard date at least to Sylva Vol. 1-3 (1945), p. 57 https://books.google.com/books?id=-QUcAQAAMAAJ&q=%22Tact+is+the+knack+of+making+a+point+without+making+an+enemy%22&dq=%22Tact+is+the+knack+of+making+a+point+without+making+an+enemy%22&hl=en&sa=X&ei=jtmwVJrZN43ksATPmID4BA&ved=0CNkBEOgBMCQ, where it is cited to an earlier publication in Redbook.
Misattributed
Variante: Tact is the art of making a point without making an enemy.
Variante: Tact is the knack of making a point without making an enemy.

“Whence arises all that order and beauty we see in the world?”

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

Source: Opticks

“If I have seen further than others, it is by standing upon the shoulders of giants.”

Letter to Robert Hooke (15 February 1676) [dated as 5 February 1675 using the Julian calendar with March 25th rather than January 1st as New Years Day, equivalent to 15 February 1676 by Gregorian reckonings.] A facsimile of the original is online at The digital Library https://digitallibrary.hsp.org/index.php/Detail/objects/9792. The quotation is 7-8 lines up from the bottom of the first page. The phrase is most famous as an expression of Newton's but he was using a metaphor which in its earliest known form was attributed to Bernard of Chartres by John of Salisbury: Bernard of Chartres used to say that we [the Moderns] are like dwarves perched on the shoulders of giants [the Ancients], and thus we are able to see more and farther than the latter. And this is not at all because of the acuteness of our sight or the stature of our body, but because we are carried aloft and elevated by the magnitude of the giants. Modernized variants: If I have seen further it is by standing on the shoulders of giants. If I have seen further it is only by standing on the shoulders of giants.
Variante: If I have seen further it is by standing on ye sholders of Giants.
Source: The Correspondence Of Isaac Newton

“We must believe in one God that we may love & fear him. We must believe that he is the father Almighty, or first author of all things by the almighty power of his will, that we may thank & worship him & him alone for our being and for all the blessings of this life < insertion from f 43v > We must believe that this is the God of moses & the Jews who created heaven & earth & the sea & all things therein as is expressed in the ten commandments, that we may not take his name in vain nor worship images or visible resemblances nor have (in our worship) any other God then him. For he is without similitude he is the invisible God whom no eye hath seen nor can see, & therefore is not to be worshipped in any visible shape. He is the only invisible God & the only God whom we are to worship & therefore we are not to worship any visible image picture likeness or form. We are not forbidden to give the name of Gods to Angels & Kings but we are forbidden to worship them as Gods. For tho there be that are called Gods whether in heaven or in earth (as there are Gods many & Lords many) yet to us there is but one God the Father of whom are all things & we in him & our Lord Jesus Christ by whom are all things & we in him, that is, but one God & one Lord in our worship: One God & one mediator between God & man the man Christ Jesus. We are forbidden to worship two Gods but we are not forbidden to worship one God, & one Lord: one God for creating all things & one Lord for redeeming us with his blood. We must not pray to two Gods, but we may pray to one God in the name of one Lord. We must believe therefore in one Lord Jesus Christ that we may behave our selves obediently towards him as subjects & keep his laws, & give him that honour & glory & worship which is due to him as our Lord & King or else we are not his people. We must believe that this Lord Jesus is the Christ, or Messiah the Prince predicted by Daniel, & we must worship him as the Messiah or else we are no Christians. The Jews who were taught to have but one God were also taught to expect a king, & the Christians are taught in their Creed to have the same God & to believe that Jesus is that King.”

Drafts on the history of the Church (Section 3). Yahuda Ms. 15.3, National Library of Israel, Jerusalem, Israel. 2006 Online Version at Newton Project http://www.newtonproject.sussex.ac.uk/view/texts/normalized/THEM00220

“Bullialdus wrote that all force respecting the Sun as its center & depending on matter must be reciprocally in a duplicate ratio of the distance from the center.”

Letter to Edmund Halley (June 20, 1686) quoted in I. Bernard Cohen and George E. Smith, ed.s, The Cambridge Companion to Newton (2002) p. 204

“One [method] is by a Watch to keep time exactly. But, by reason of the motion of the Ship, the Variation of Heat and Cold, Wet and Dry, and the Difference of Gravity in different Latitudes, such a watch hath not yet been made.”

Written in remarks to the 1714 Longitude committee; quoted in Longitude (1995) by Dava Sobel, p. 52 (i998 edition) ISBN 1-85702-571-7)
Board of Longitude

“The changing of bodies into light, and light into bodies, is very conformable to the course of Nature, which seems delighted with transmutations.”

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

Query 30 : Are not gross bodies and light convertible into one another, and may not bodies receive much of their activity from the particles of light which enter into their composition?
Opticks (1704)

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