The disgust with dirt can be so great that it keeps us from cleaning ourselves--from "justifying" ourselves.

It is a terrible thought, to contemplate that an immense number of mediocre thinkers are occupied with really influential matters.

I cannot believe in a God who wants to be praised all the time.

I want to teach men the sense of their existence, which is the Superman, the lightning out of the dark cloud man.

A noble soul is not the one that can manage the highest flights but the one that rises very little and falls very little but always dwells in a free, resplendent atmosphere and altitude.

The doer is merely a fiction added to the deed ? the deed is everything.

There is no more dangerous error than that of mistaking the consequence for the cause.