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

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

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

Madness need not be all breakdown. It may also be breakthrough.

Your mind’s got to eat, too.

The march of the human mind is slow.

Brains are the only things worth having in this world.

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

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

The brain may be regarded as a kind of parasite of the organism, a pensioner, as it were, who dwells with the body.

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

my mind is
a big hunk of irrevocable nothing