In psychoanalysis nothing is true except the exaggerations.

Brain, n. An apparatus with which we think that we think.

Sanity is madness put to good uses; waking life is a dream controlled.

The most potent weapon in the hands of the oppressor is the mind of the oppressed.

Any man could, if he were so inclined, be the sculptor of his own brain.

The mind is not, I know, a highway but a temple, and its doors should not be carelessly left open.

Not all heads have a brain.

Imagination is the secret and marrow of civilization. It is the very eye of faith.

To be too conscious is an illness—a real thoroughgoing illness.

It is far, far better and much safer to have a firm anchor in nonsense than to put out on the troubled seas of thought.

The human mind is an evolutionary product, just like the human body.

Understanding is a very dull occupation.

What the brain does by itself is infinitely more fascinating and complex than any response it can make to chemical stimulation.