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

We need strength, we need energy, we need quickness, and we need brain in this country to turn it around.

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

Brains are the only things worth having in this world.

The march of the human mind is slow.

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

As is the face, so is the mind.

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

In psychoanalysis nothing is true except the exaggerations.

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

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

Not all heads have a brain.

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