But every soil becomes finally exhausted, and the ploughshare of evil must always come once more.

The living is a species of the dead; and not a very attractive one.

Aphorisms should be peaks - and those who are addressed, tall and lofty. The air thin and pure, danger near, and the spirit full of gay sarcasm: these go well together.

We should be a mirror of being: we are God in miniature.

So far there has been no philosopher in whose hands philosophy has not grown into an apology for knowledge; on this point, at least, every one is an optimist, that the greatest usefulness must be ascribed to knowledge. They are all tyrannized over by logic, and this is optimism in its essence.

Whoever does not have a good father should procure one.

There is more wisdom in your body than in your best wisdom. And who then knows why your body needs precisely your best wisdom?