Intuition is a method of feeling one's way intellectually into the inner heart of a thing to locate what is unique and inexpressible in it.

When we make the cerebral state the beginning of an action, and in no sense the condition of a perception, we place the perceived images of things outside the image of our body, and thus replace perception within the things themselves.

The major task of the twentieth century will be to explore the unconscious, to investigate the subsoil of the mind.

The only cure for vanity is laughter. And the only fault that's laughable is vanity.

Europe is overpopulated, the world will soon be in the same condition, and if the self-reproduction of man is not rationalized... we shall have war.

We regard intelligence as man's main characteristic and we know that there is no superiority which intelligence cannot confer on us, no inferiority for which it cannot compensate.

In laughter we always find an unavowed intention to humiliate and consequently to correct our neighbour.