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Every great advance in natural knowledge has involved the absolute rejection of authority.

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Anarchism is founded on the observation that since few men are wise enough to rule themselves, even fewer are wise enough to rule others.

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I disapprove of what you say, but I will defend to the death your right to say it.

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Liberty is the right to choose. Freedom is the result of the right choice.

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There is no abstract art. You must always start with something. Afterward you can remove all traces of reality.

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What we think, or what we know, or what we believe is, in the end, of little consequence. The only consequence is what we do.

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Everybody believes in something and everybody, by virtue of the fact that they believe in something, use that something to support their own existence.

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Doubt is not a pleasant condition, but certainty is absurd.

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Irrationally held truths may be more harmful than reasoned errors.

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Man is ready to die for an idea, provided that idea is not quite clear to him.

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