Isaac Newton Quotes
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As a blind man has no idea of colors, so we have no idea of the manner by which the all-wise God perceives and understands all things.
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And first I suppose that there is diffused through all places an aethereal substance capable of contraction & dilatation, strongly elastick, & in a word, much like air in all respects, but far more subtile. 2. I suppose this aether pervades all gross bodies, but yet so as to stand rarer in their pores then in free spaces, & so much ye rarer as their pores are less ... 3. I suppose ye rarer aether within bodies & ye denser without them, not to be terminated in a mathematical superficies, but to grow gradually into one another.
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If I have done the public any service, it is due to my patient thought.
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What goes up must come down.
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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.
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Bullialdus wrote that all force respecting ye Sun as its center & depending on matter must be reciprocally in a duplicate ratio of ye distance from ye center.
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A body in motion tends to stay in motion unless acted on by an outside force.
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If I had stayed for other people to make my tools and things for me, I had never made anything.
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Blind metaphysical necessity, which is certainly the same always and every where, could produce no variety of things. All that diversity of natural things which we find suited to different times and places could arise from nothing but the ideas and will of a Being, necessarily existing.
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We are not to consider the world as the body of God: he is an uniform being, void of organs, members, or parts; and they are his creatures, subordinate to him, and subservient to his will.
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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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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.
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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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A man may imagine things that are false, but he can only understand things that are true, for if the things be false, the apprehension of them is not understanding.
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I see I have made my self a slave to Philosophy.
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To explain all nature is too difficult a task for any one man or even for any one age.
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I understood. I have understood. I do understand.
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I have a fundamental belief in the Bible as the Word of God, written by those who were inspired. I study the Bible daily.
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Tact is the art of making a point without making an enemy.
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Impressed force is the action exerted on a body to change its state either of resting or of moving uniformly straight forward.