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

The mind of man is capable of anything.

The march of the human mind is slow.

Brains are the only things worth having in this world.

Is there no way out of the mind?

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

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

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

Understanding is a very dull occupation.

A mind lively and at ease can do with seeing nothing, and can see nothing that does not answer.

Your mind’s got to eat, too.

Imagination continually outruns the creature it inhabits.

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