Iron necessity is a thing which in the course of history men come to see as neither iron nor necessary.

There are preachers of death: and the earth is full of those to whom desistance from life must be preached.

Solitude makes us tougher towards ourselves and tenderer towards others. In both ways it improves our character.

The job of rearing a child consists of making conscious activities unconscious.

A sure way to irritate people and to put evil thoughts into their heads is to keep them waiting a long time. This makes them immoral.

Whoever possesses the will to suffering within himself has a different attitude towards cruelty: he does not regard it as inherently harmful and bad.

Invisible threads are the strongest ties.