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

Imagination continually outruns the creature it inhabits.

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.

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

What the brain does by itself is infinitely more fascinating and complex than any response it can make to chemical stimulation.

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.

Imagination is the secret and marrow of civilization. It is the very eye of faith.

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

Your mind’s got to eat, too.

Is there no way out of the mind?

Every thought is, strictly speaking, an afterthought.

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