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.

Brains are the only things worth having in this world.

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

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

Strength of mind is exercise, not rest.

We need strength, we need energy, we need quickness, and we need brain in this country to turn it around.

What a torture to talk to filled heads that allow nothing from the outside to enter them.

A mind lively and at ease can do with seeing nothing, and can see nothing that does not answer.

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

Your mind’s got to eat, too.

The highest possible stage in moral culture is when we recognize that we ought to control our thoughts.

From a man’s face, I can read his character. If I can see him walk, I know his thoughts.

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