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He attacked everything in life with a mix of extrordinary genius and naive incompetence, and it was often difficult to tell which was which.

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See first, think later, then test. But always see first. Otherwise you will only see what you were expecting. Most scientists forget that.

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The perfect man of action, is the suicide.

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Duty is heavier than a mountain, death lighter than a feather.

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Honor and shame from no condition rise.
Act well your part: there all the honor lies.

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Blessed is the man who expects nothing, for he shall never be disappointed.

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Pain is a very precious gift. Do not waste it.

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Speak of things public to the public, but of things lofty and secret only to the loftiest and most private of your friends. Hay to the ox and sugar to the parrot.

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A state that dwarfs its men in order that they may be more docile instruments in its hands even for beneficial purposes, will find that with small men no great things can really be accomplished.

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True genius is always inborn and never cultivated, let alone learned.

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