In psychoanalysis nothing is true except the exaggerations.

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.

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

The march of the human mind is slow.

Though this be madness, yet there is method in’t.

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

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

The mind of man is capable of anything.

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

As is the face, so is the mind.

Is there no way out of the mind?

The brain may be regarded as a kind of parasite of the organism, a pensioner, as it were, who dwells with the body.

What is the hardest task in the world? To think.