Loneliness is one thing, solitude another.

Mothers easily become jealous of their sons' friends when they are particularly successful. As a rule a mother loves herself in her son more than she does the son himself.

Our knowledge will take its revenge on us, just as ignorance exacted its revenge during the Middle Ages.

And we should consider every day lost on which we have not danced at least once. And we should call every truth false which was not accompanied by at least one laugh.

Where is the lightning to lick you with its tongue? Where is the madness with which you should be cleansed? Behold, I show you the Superman. He is this lightning, he is this madness.

And he who must be a creator in good and evil: verily, he must be an annihilator first and demolish values.

You're going to women? Don't forget your whip!