Imagination continually outruns the creature it inhabits.

What is outside my mind means nothing to it.

The mind of man is capable of anything.

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

As is the face, so is the mind.

Is there no way out of the mind?

The mind is not, I know, a highway but a temple, and its doors should not be carelessly left open.

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.

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 sleep of reason produces monsters.

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

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

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