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eorum omnium actiones in se invicem

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If I have seen farther it is by standing on the shoulders of giants.

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If I have been able to see further than others, it is because I have stood on the shoulders of giants

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What goes up must come down.

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God in the beginning formed matter in solid, massy, hard, impenetrable, movable particles, of such sizes and figures, and with such other properties, ...more

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For every action, there is an equal and opposite reaction.

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Gravity explains the motions of the planets, but it cannot explain who sets the planets in motion.

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I do not know what I may appear to the world, but to myself I seem to have been only like a boy playing on the sea-shore, and diverting myself in now ...more

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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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A Vulgar Mechanick can practice what he has been taught or seen done, but if he is in an error he knows not how to find it out and correct it, and if ...more

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This principle of nature being very remote from the conceptions of Philosophers, I forbore to describe it in that book, least I should be accounted an...more

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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 Opt...more

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If I have seen further it is by standing on the shoulders of Giants.

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God who gave Animals self motion beyond our understanding is without doubt able to implant other principles of motion in bodies [which] we may underst...more

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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 th...more