Brains are the only things worth having in this world.

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

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

The universe is an object of thought at least as much as it is a means of satisfying needs.

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.

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.

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

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

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

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

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

The mind of man is capable of anything.

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