Freedom of opinion is like health; both are individual, and no good general conception can be set up of either of them.

Wisdom sets bounds even to knowledge.

Reason" in language - oh, what an old deceptive female she is! I am afraid we are not rid of God because we still have faith in grammar.

Every virtue has its privilege: for example, that of contributing its own little bundle of wood to the funeral pyre of one condemned.

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.

As far as Germany extends it ruins culture.

We have arranged for ourselves a world in which we can live - by positing bodies, lines, planes, causes and effects, motion and rest, form and content; without these articles of faith nobody could now endure life. But that does not prove them. Life is no argument. The conditions of life might include error.