Everything you say should be true, but not everything true should be said.

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Animals have these advantages over man: they never hear the clock strike, they die without any idea of death, they have no theologians to instruct them, their last moments are not disturbed by unwelcome and unpleasant ceremonies, their funerals cost them nothing, and no one starts lawsuits over their wills.

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It is dangerous to be right in matters where established men are wrong.

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Je ne suis pas d'accord avec ce que vous dites, mais je d‚fendrai jusqu'... la mort le droit que vous avez de le dire/ I do not agree with what you have to say, but I'll defend to the death your right to say it

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Anyone who has the power to make you believe absurdities has the power to make you commit injustices.

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Those who can be made to believe absurdities can be made to commit atrocities.

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‎Life is a shipwreck, but we must not forget to sing in the lifeboats.

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Many are destined to reason wrongly; others, not to reason at all; and others, to persecute those who do reason.

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It is difficult to free fools from the chains they revere.

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If there’s life on other planets, then the earth is the Universe’s insane asylum.

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