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Moral indignation is jealousy with a halo.

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Do not smoke without asking permission or sit so near (as in a train) that the smoke might annoy.

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Not everything that can be counted counts, and not everything that counts can be counted.

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Each problem that I solved became a rule which served afterwards to solve other problems.

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Cogito ergo sum. (I think; therefore I am.)

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In the end, we will remember not the words of our enemies, but the silence of our friends.

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The only way to get rid of a temptation is to yield to it.

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I can remember when the air was clean and sex was dirty.

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Philosophy is a battle against the bewitchment of our intelligence by means of language.

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Do not speak of repulsive matters at table.

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