The most dangerous madmen are those created by religion, and people whose aim is to disrupt society always know how to make good use of them on occasion.

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

Scepticism is the first step toward truth.

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.

All children are essentially criminal.

We swallow with one gulp the lie that flatters us, and drink drop by drop the truth which is bitter to us.

Only the bad man is alone.