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

What a torture to talk to filled heads that allow nothing from the outside to enter them.

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

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

In psychoanalysis nothing is true except the exaggerations.

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

Strength of mind is exercise, not rest.

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

Not all heads have a brain.

The brain is an unreliable organ, it is monstrously great, monstrously developed. Swollen, like a goiter.

What is outside my mind means nothing to it.

As is the face, so is the mind.

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