Brains are the only things worth having in this world.

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

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

Your mind’s got to eat, too.

In psychoanalysis nothing is true except the exaggerations.

Though this be madness, yet there is method in’t.

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

Imagination continually outruns the creature it inhabits.

Not all heads have a brain.

The march of the human mind is slow.

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.

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

What is the hardest task in the world? To think.