Women are quite able to make friends with a man; but to preserve such a friendship - that no doubt requires the assistance of a slight physical antipathy

These small things - nutrition, place, climate, recreation, the whole casuistry of selfishness - are inconceivably more important than everything one has taken to be important so far.

The most fundamental form of human stupidity is forgetting what we were trying to do in the first place.

Everywhere resoundeth the voices of those who preach death; and the earth is full of those to whom death hath to be preached.

In a man devoted to knowledge, pity seems almost ridiculous, like delicate hands on a cyclops.

To explore the whole sphere of the modern soul, to have sat in every nook- my ambition, my torture, and my happiness

The transition from Religion to Scientific contemplation is a violent, dangerous leap, which is not to be recommended. In order to make this transition, art is far rather to be employed to relieve the mind overburdened with emotions. Out of the illogical comes much good. It is so firmly rooted in the passions, in language, in art, in religion, and generally in everything which gives value to life. It is only the naive people who can believe that the nature of man can be changed into a purely logical one. We have yet to learn that others can suffer, and this can never be completely learned.