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

In psychoanalysis nothing is true except the exaggerations.

Don’t lose your mind unless you have paid for it.

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

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

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

Is there no way out of the mind?

As is the face, so is the mind.

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

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

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

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

Sooner or later if the activity of the mind is restricted anywhere, it will cease to function even where it is allowed to be free.