We are in the greatest danger of being run over when we have just gotten out of the way of a carriage.

Whoever is related to me in the height of his aspirations will experience veritable ecstasies of learning; for I come from heights that no bird ever reached in its flight, I know abysses into which no foot ever strayed.

Discontent is the seed of ethics.

We can speak very much to the purpose and yet in such a way that the whole world cries out in contradiction: namely, when we are not speaking to the whole world.

As long as you still experience the stars as something "above you", you lack the eye of knowledge.

What doesn't kill you make you stronger.

One is not converted to christianity; one must be morbid enough for it.