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Seldom, very seldom, does complete truth belong to any human disclosure; seldom can it happen that something is not a little disguised, or a little mistaken.

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Keep thy religion to thyself.

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With great power comes great responsibility.

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The ballot is stronger than the bullet.

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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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