He divines remedies against injuries; he knows how to turn serious accidents to his own advantage; whatever does not kill him makes him stronger

He who obeys, does not listen to himself!

All that the world most needs today, is combined in the most seductive manner in his art, — the three great stimulants of exhausted people: brutality, artificiality and innocence (idiocy).

Whatever a theologian regards as true must be false: there you have almost a criterion of truth.

Happiness: being able to forget or, to express in a more learned fashion.

Truth as Circe. - Error has transformed animals into men; is truth perhaps capable of changing man back into an animal?

Whoever has not two-thirds of his time to himself, is a slave.