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A happy life consists in tranquillity of mind.

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The deepest sin against the human mind is to believe things without evidence.

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Peace is not an absence of war, it is a virtue, a state of mind, a disposition for benevolence, confidence, justice.

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Enjoy present pleasures in such a way as not to injure future ones.

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Nearly all legislation involves a weighing of public needs as against private desires; and likewise a weighing of relative social values.

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Leisure is the mother of philosophy.

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The proposition that the people are the best keepers of their own liberties is not true. They are the worst conceivable, they are no keepers at all; they can neither judge, act, think, or will, as a political body.

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The great and invigorating influences in American life have been the unorthodox: the people who challenge an existing institution or way of life, or say and do things that make people think.

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It is bad to be oppressed by a minority, but it is worse to be oppressed by a majority. For there is a reserve of latent power in the masses which, if it is called into play, the minority can seldom resist. But from the absolute will of an entire people there is no appeal, no redemption, no refuge but treason.

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The man who backbites an absent friend, nay, who does not stand up for him when another blames him, the man who angles for bursts of laughter and for the repute of a wit, who can invent what he never saw, who cannot keep a secret - that man is black at heart: mark and avoid him.

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