In order to get as much fame as one's father one has to much more able than he.

Wandering in a vast forest at night, I have only a faint light to guide me. A stranger appears and says to me: 'My friend, you should blow out your candle in order to find your way more clearly.' This stranger is a theologian.

If you want me to believe in God, you must make me touch him.

The philosopher forms his principles on an infinity of particular observations. He does not confuse truth with plausibility, he takes for truth what is true, for false what is false, for doubtful what is doubtful, and probable what is probable. The philosophical spirit is thus a spirit of observation and accuracy.

Posterity for the philosopher is what the other world is for the religious man.

There's a bit of testicle at the bottom of our most sublime feelings and our purest tenderness.

If you disturb the colors of the rainbow, the rainbow is no longer beautiful.