If anything affects your eye, you hasten to have it removed; if anything affects your mind, you postpone the cure for a year.

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

Your mind’s got to eat, too.

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

The highest possible stage in moral culture is when we recognize that we ought to control our thoughts.

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

Understanding is a very dull occupation.

Is there no way out of the mind?

The sleep of reason produces monsters.

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

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

my mind is
a big hunk of irrevocable nothing

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