Isaac Newton Quotes - Page 7

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The best and safest way of philosophising seems to be, first to enquire diligently into the properties of things, and to establish those properties by experiences [experiments] and then to proceed slowly to hypotheses 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

Philosophy, Science, Experience

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Do not the Rays of Light which fall upon Bodies, and are reflected or refracted, begin to bend before they arrive at the Bodies; and are they not reflected, refracted, and inflected, by one and the same Principle, acting variously in various Circumstances?

Isaac Newton

Fall, Light, Acting

Sir Isaac Newton (2016). “Opticks: A Treatise of the Reflections, Refractions, Inflections, and Colours of Light”, p.210, Library of Alexandria

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I do not define time, space, place, and motion, as being well known to all. Only I must observe, that the common people conceive those quantities under no other notions but from the relation they bear to sensible objects. And thence arise certain prejudices, for the removing of which it will be convenient to distinguish them into absolute and relative, true and apparent, mathematical and common.

Isaac Newton

Space, People, Bears

Isaac Newton (1966). “Sir Isaac Newton's Mathematical Principles of Natural Philosophy and His System of the World: The motion of bodies”, p.6, Univ of California Press

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Do not Bodies and Light act mutually upon one another; that is to say, Bodies upon Light in emitting, reflecting, refracting and inflecting it, and Light upon Bodies for heating them, and putting their parts into a vibrating motion wherein heat consists?

Isaac Newton

Science, Light, Body

Sir Isaac Newton (2016). “Opticks: A Treatise of the Reflections, Refractions, Inflections, and Colours of Light”, p.210, Library of Alexandria

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From what has been said it is also evident, that the Whiteness of the Sun's Light is compounded all the Colours wherewith the several sorts of Rays whereof that Light consists, when by their several Refrangibilities they are separated from one another, do tinge Paper or any other white Body whereon they fall. For those Colours ... are unchangeable, and whenever all those Rays with those their Colours are mix'd again, they reproduce the same white Light as before.

Isaac Newton

Fall, White, Light

Sir Isaac Newton (2016). “Opticks: A Treatise of the Reflections, Refractions, Inflections, and Colours of Light”, p.98, Library of Alexandria

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Henceforward the Christian Churches having a form of godliness, but denying the power thereof, came into the hands of the Encratites: and the Heathens, who in the fourth century came over in great numbers to the Christians, embraced more readily this sort of Christianity, as having a greater affinity with their old superstitions, than that of the sincere Christians; who by the lamps of the seven Churches of Asia, and not by the lamps of the Monasteries, had illuminated the Church Catholic during the three first centuries.

Isaac Newton

Christian, Numbers, Hands

Isaac Newton “Observations”, Lulu.com

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No old Men (excepting Dr. Wallis) love Mathematicks.

Isaac Newton

Men, Drs, Mathematics

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Centripetal force is the force by which bodies are drawn from all sides, are impelled, or in any way tend, toward some point as to a center.

Isaac Newton

Body, Way, Sides

Sir Isaac Newton (2016). “The Principia: The Authoritative Translation: Mathematical Principles of Natural Philosophy”, p.51, Univ of California Press

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As I am writing, another illustration of ye generation of hills proposed above comes into my mind. Milk is as uniform a liquor as ye chaos was. If beer be poured into it & ye mixture let stand till it be dry, the surface of ye curdled substance will appear as rugged & mountanous as the Earth in any place.

Isaac Newton

Writing, Beer, Illustration

Sir Isaac Newton (1959). “Correspondence: 1676-1687”

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By such deductions the law of gravitation is rendered probable, that every particle attracts every other particle with a force which varies inversely as the square of the distance. The law thus suggested is assumed to be universally true.

Isaac Newton

Distance, Science, Squares

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A good watch may serve to keep a recconing at Sea for some days and to know the time of a Celestial Observ[at]ion: and for this end a good Jewel watch may suffice till a better sort of Watch can be found out. But when the Longitude at sea is once lost, it cannot be found again by any watch.

Isaac Newton

Jewels, Sea, Ions

Sir Isaac Newton (1977). “1718-1727”

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'Tis the temper of the hot and superstitious part of mankind in matters of religion ever to be fond of mysteries, and for that reason to like best what they understand least.

Isaac Newton

Hot, Matter, Mystery

Sir Isaac Newton (1785). “Isaaci Newtoni Opera quae exstant omnia”, p.530

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For the Rays, to speak properly, have no Colour. In them there is nothing else than a certain power and disposition to stir up a sensation of this Colour or that.

Isaac Newton

Rays, Speak, Disposition

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Now the smallest Particles of Matter may cohere by the strongest Attractions, and compose bigger Particles of weaker Virture.... There are therefore Agents in Nature able to make the Particles of Bodies stick together by very strong Attraction. And it is the Business of experimental Philosophy to find them out.

Isaac Newton

Strong, Philosophy, Together

Sir Isaac Newton (2012). “Newton's Philosophy of Nature: Selections from His Writings”, p.172, Courier Corporation

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The alternation of motion is ever proportional to the motive force impressed; and is made in the direction of the right line in which that force is impressed.

Isaac Newton

Lines, Made, Force

Principia Mathematica "Laws of Motion" 2 (1687) (translation by Andrew Motte)

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Our present work sets forth mathematical principles of philosophy. For the basic problem of philosophy seems to be to discover the forces of nature from the phenomena of motions and then to demonstrate the other phenomena from these forces. It is to these ends that the general propositions in books 1 and 2 are directed, while in book 3 our explanation of the system of the world illustrates these propositions.

Isaac Newton

Nature, Philosophy, Book

Sir Isaac Newton (2014). “Newton: Philosophical Writings”, p.60, Cambridge University Press

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My Design in this Book is not to explain the Properties of Light by Hypotheses, but to propose and prove them by Reason and Experiments: In order to which, I shall premise the following Definitions and Axioms.

Isaac Newton

Book, Science, Light

Opticks Book One, Part I

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It is indeed a matter of great difficulty to discover, and effectually to distinguish, the true motions of particular bodies from the apparent; because the parts of that immovable space, in which those motions are performed, do by no means come under the observation of our senses. Yet the thing is not altogether desperate; for we have some arguments to guide us, partly from the apparent motions, which are the differences of the true motions; partly from the forces, which are the causes and effects of the true motions.

Isaac Newton

Mean, Differences, Space

Sir Isaac Newton (2016). “Delphi Collected Works of Sir Isaac Newton (Illustrated)”, p.470, Delphi Classics

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You sometimes speak of gravity as essential and inherent to matter. Pray do not ascribe that notion to me, for the cause of gravity is what I do not pretend to know, and therefore would take more time to consider of it.

Isaac Newton

Knowledge, Science, Matter

Sir Isaac Newton (2014). “Newton: Philosophical Writings”, p.126, Cambridge University Press

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The kingdoms represented by the second and third Beasts, or the Bear and Leopard, are again described by Daniel in his last Prophecy written in the third year of Cyrus over Babylon , the year in which he conquered Persia. For this Prophecy is a commentary upon the Vision of the Ram and He-Goat.

Isaac Newton

Years, Vision, Rams

Sir Isaac Newton (2016). “Observations upon the Prophecies of Daniel, and the Apocalypse of St. John”, p.112, Library of Alexandria

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Qu. 31. Have not the small Particles of Bodies certain Powers, Virtues or Forces, by which they act at a distance, not only upon the Rays of Light for reflecting, refracting and reflecting them, but also upon one another for producing a great part of the Phænomena of Nature?

Isaac Newton

Nature, Distance, Science

SIR ISAAC NEWTON (1952). “MATHEMATICAL PRINCIPLES OF NATURAL PHILOSOPHY OPTICS”

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I have been much amused at ye singular phenomena resulting from bringing of a needle into contact with a piece of amber or resin fricated on silke clothe. Ye flame putteth me in mind of sheet lightning on a small-how very small-scale.

Isaac Newton

Science, Flames, Mind

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Pontus, instituted among all people, as an addition or corollary of devotion towards God, that festival days and assemblies should be celebrated to them who had contended for the faith (that is, to lie martyrs ).

Isaac Newton

Lying, People, Festivals

"Observations upon the Prophecies of Daniel and the Apocalypse of St. John". Volume 1, p. 204, 1733.

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All material Things seem to have been composed of the hard and solid Particles ... variously associated with the first Creation by the Counsel of an intelligent Agent. For it became him who created them to set them in order: and if he did so, it is unphilosophical to seek for any other Origin of the World, or to pretend that it might arise out of a Chaos by the mere Laws of Nature.

Isaac Newton

Nature, Science, Intelligent

Isaac Newton (2004). “Isaac Newton: Philosophical Writings”, p.138, Cambridge University Press

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In experimental philosophy, propositions gathered from phenomena by induction should be considered either exactly or very nearly true notwithstanding any contrary hypotheses, until yet other phenomena make such propositions either more exact or liable to exceptions.

Isaac Newton

Philosophy, Science, Liable

Isaac Newton, I. Bernard Cohen, Anne Whitman (1999). “The Principia: Mathematical Principles of Natural Philosophy”, p.796, Univ of California Press

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Born: January 4, 1643
Died: March 31, 1727
Occupation: Physicist
Cite this Page: Citation

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