What, if some day or night a demon were to steal after you into your loneliest loneliness and say to you: 'This life as you now live it and have lived it, you will have to live once more and innumerable times more' ... Would you not throw yourself down and gnash your teeth and curse the demon who spoke thus? Or have you once experienced a tremendous moment when you would have answered him: 'You are a god and never have I heard anything more divine.

In the true man there is a child concealed who wants to play.

It says nothing against the ripeness of a spirit that it has a few worms.

It is not things, but opinions about things that have absolutely no existence, which have so deranged mankind!

What the father kept silent the son speaks out.

Democratic institutions form a system of quarantine for tyrannical desires.

A little poison now and then: that makes for pleasant dreams. And a lot of poison at the end, for a pleasant death.