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

Is there no way out of the mind?

The mind of man is capable of anything.

What is outside my mind means nothing to it.

In psychoanalysis nothing is true except the exaggerations.

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

The march of the human mind is slow.

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

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

The sleep of reason produces monsters.

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.

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

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