Your mind’s got to eat, too.

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

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

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

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

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

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

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

“I think, therefore I am” is the statement of an intellectual who underrates toothaches.

It is far, far better and much safer to have a firm anchor in nonsense than to put out on the troubled seas of thought.

Brains are the only things worth having in this world.

Not all heads have a brain.