One who has a why can endure anyhow.

There is an innocence in lying which is the sign of good faith in a cause.

The wheel and the brake have different duties, but also one in common: to hurt one another.

Whoever gives advice to a sick person acquires a feeling of superiority over him, whether the advice be accepted or rejected.

People who comprehend a thing to its very depths rarely stay faithful to it forever. For they have brought its depths into the light of day: and in the depths there is always much that is unpleasant to see.

Let us beware of saying there are laws in nature. There are only necessities: there is no one to command, no one to obey, no one to transgress. When you realize there are no goals or objectives, then you realize, too, that there is no chance: for only in a world of objectives does the word chance have any meaning.

I feel all those human beings to be pernicious who can no longer oppose what they love: they thereby ruin the best things and people.