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We are to admit no more causes of natural things than such as are both true and sufficient to explain their appearances.

Isaac Newton

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Isaac Newton
Age: 84 †
Born: 1643
Born: January 4
Died: 1727
Died: March 20
Alchemist
Astrologer
Astronomer
Chemist
Inventor
Mathematician
Non-Fiction Writer
Philosopher
Physicist
Politician
Polymath
Theologian
Newton
Sir Isaac Newton
Isaacus Neutonus
Isaacus Newtonus
I. Newton
Isaac Newtonius
I. Newtonius
Izaak Newton
Issac Newton
Isaak. N'ûton
Isaaco Newton
Isaak Newton
Ayzik Nyuton
Niu-tun
Is. N'ûton
Isaac Neuton
Izaak. N'juton
Isaak N'juton
Niu-tun.
Isaak N'iuton
Izaak. Newton
Things
Admit
Sufficient
Explain
Appearance
Causes
Natural
Science
Razors
True
Appearances

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To any action there is always an opposite and equal reaction in other words, the actions of two bodies upon each other are always equal and always opposite in direction.
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The main Business of Natural Philosophy is to argue from Phænomena without feigning Hypotheses, and to deduce Causes from Effects till we come to the very first Cause, which certainly is not mechanical and not only to unfold the Mechanism of the World, but chiefly to resolve these, and to such like Questions.
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Is not Fire a Body heated so hot as to emit Light copiously? For what else is a red hot Iron than Fire? And what else is a burning Coal than red hot Wood?
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The changing of Bodies into Light, and Light into Bodies, is very conformable to the Course of Nature, which seems delighted with Transmutations.
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He who thinks half-heartedly will not believe in God but he who really thinks has to believe in God.
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Oh Diamond! Diamond! thou little knowest the mischief done! [Apocryphal]
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Godliness consists in the knowledge love & worship of God, Humanity in love, righteousness & good offices towards man.
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I shall not mingle conjectures with certainties.
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If I am anything, which I highly doubt, I have made myself so by hard work.
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The description of right lines and circles, upon which geometry is founded, belongs to mechanics. Geometry does not teach us to draw these lines, but requires them to be drawn.
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Nature is pleased with simplicity. And nature is no dummy.
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I feign no hypotheses.
Isaac Newton
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I see I have made myself a slave to Philosophy, but if I get free of Mr. Linus's business I will resolutely bid adew to it eternally, excepting for what I do for my private satisfaction or leave to come out after me. For I see a man must either resolve to put out nothing new or to become a slave to defend it.
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How came the bodies of animals to be contrived with so much art, and for what ends were their several parts? Was the eye contrived without skill in Opticks, and the ear without knowledge of sounds?...and these things being rightly dispatch’d, does it not appear from phænomena that there is a Being incorporeal, living, intelligent...?
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Do not Bodies act upon Light at a distance, and by their action bend its Rays and is not this action (caeteris paribus) [all else being equal] strongest at the least distance?
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What we know is a drop, what we don't know is an ocean.
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Absolute, true and mathematical time, of itself, and from its own nature flows equably without relation to anything external.
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The instinct of brutes and insects can be the effect of nothing else than the wisdom and skill of a powerful ever-living agent.
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Definition of inertia: 'The vis insita, or innate force of matter, is a power of resisting by which every body, as much as in it lies, endeavours to preserve its present state, whether it be of rest or of moving uniformly forward in a straight line.
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I have a fundamental belief in the Bible as the Word of God, written by men who were inspired. I study the Bible daily. Opposition to godliness is atheism in profession and idolatry in practice. Atheism is so senseless and odious to mankind that it never had many professors.
Isaac Newton