Life is livable because we know that wherever we go most of the people we meet will be restrained in their actions towards us by an almost instinctive network of taboos.

Every man of genius sees the world at a different angle from his fellows, and there is his tragedy.

The by-product is sometimes more valuable than the product.

Failing to find in women exactly the same kind of sexual emotions, as they find in themselves, men have concluded that there are none there at all.

No act can be quite so intimate as the sexual embrace.

All civilization has from time to time become a thin crust over a volcano of revolution.

Here, where we reach the sphere of mathematics, we are among processes which seem to some the most inhuman of all human activities and the most remote from poetry. Yet it is here that the artist has the fullest scope of his imagination.