The march of the human mind is slow.

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.

The real question is not whether machines think but whether men do.

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

What is outside my mind means nothing to it.

As is the face, so is the mind.

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

Is there no way out of the mind?

In psychoanalysis nothing is true except the exaggerations.

my mind is
a big hunk of irrevocable nothing

Understanding is a very dull occupation.

The sleep of reason produces monsters.

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