Madness need not be all breakdown. It may also be breakthrough.

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 universe is an object of thought at least as much as it is a means of satisfying needs.

In psychoanalysis nothing is true except the exaggerations.

There is no female mind. The brain is not an organ of sex. As well speak of a female liver.

The sleep of reason produces monsters.

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

Understanding is a very dull occupation.

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

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

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

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

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