We must be cruel as well as compassionate: let us guard against becoming poorer than nature is!

I fear animals regard man as a creature of their own kind which has in a highly dangerous fashion lost its healthy animal reason - as the mad animal, as the laughing animal, as the weeping animal, as the unhappy animal.

Here we also see: what this divinity lacks is not only a sense of shame-and there are also other reasons for conjecturing that in several respects all of the gods could learn from us humans. We humans are-more humane.

The ordinary man is as courageous and invulnerable as a hero when he does not recognize any danger, when he has no eyes to see it.Conversely, the hero's only vulnerable spot is on his back, and so exactly where he has no eyes.

There are two things a real man likes - danger and play; and he likes woman because she is the most dangerous of play things.

Most people are far too much occupied with themselves to be malicious.

Since Copernicus, man seems to have got himself on an inclined plane-now he is slipping faster and faster away from the center into-what? into nothingness? into a 'penetrating sense of his nothingness?' ... all science, natural as well as unnatural-which is what I call the self-critique of knowledge-has at present the object of dissuading man from his former respect for himself, as if this had been but a piece of bizarre conceit.