Pain makes hens and poets cackle.

Of all writings I love only that which is written with blood. Write with blood: and you will discover that blood is spirit.

It is certainly not the least charm of a theory that it is refutable.

Compulsion precedes morality, indeed morality itself is compulsion for a time, to which one submits for the avoidance of pain.

... hitherto we have been permitted to seek beauty only in the morally good - a fact which sufficiently accounts for our having found so little of it and having had to seek about for imaginary beauties without backbone! - As surely as the wicked enjoy a hundred kinds of happiness of which the virtuous have no inkling, so too they possess a hundred kinds of beauty; and many of them have not yet been discovered.

The wisest man would be the one richest in contradictions, who has, as it were, antennae for all types of men---as well as his great moments of grand harmony---a rare accident even in us! A sort of planetary motion---

Men after death ... are understood worse than men of the moment, but heard better.