What is outside my mind means nothing to it.

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.

Sanity is madness put to good uses; waking life is a dream controlled.

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

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

Is there no way out of the mind?

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

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

Brains are the only things worth having in this world.

Strength of mind is exercise, not rest.

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

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