Imagination continually outruns the creature it inhabits.

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

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

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

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

From a man’s face, I can read his character. If I can see him walk, I know his thoughts.

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

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 is outside my mind means nothing to it.

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

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

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

Brains are the only things worth having in this world.