Genius is that which forces the inertia of humanity to learn.

The present contains nothing more than the past, and what is found in the effect was already in the cause.

Wherever anything lives, there is, open somewhere, a register in which time is being inscribed.

It seems that laughter needs an echo.

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

To perceive means to immobilize. To say this is to say that we seize, in the act of perception, something which outruns perception itself.

For life is tendency, and the essence of a tendency is to develop in the form of a sheaf, creating, by its very growth, divergent directions among which its impetus is divided.