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.

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

Not all heads have a brain.

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

Every thought is, strictly speaking, an afterthought.

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

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

In psychoanalysis nothing is true except the exaggerations.

Brains are the only things worth having in this world.

The mind of man is capable of anything.

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

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

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