I cannot imagine a God who rewards and punishes the objects of his creation and is but a reflection of human frailty.

The true sign of intelligence is not knowledge but imagination.

Logic will get you from A to B. Imagination will take you everywhere.

I am enough of an artist to draw freely upon my imagination.

To raise new questions, new possibilities, to regard old problems from a new angle, requires creative imagination and marks real advance in science.

The difference between stupidity and genius is that genius has its limits.

It's not that I'm so smart, it's just that I stay with problems longer.

Any man who reads too much and uses his own brain too little falls into lazy habits of thinking.

Intellectuals solve problems, geniuses prevent them.

We should take care not to make the intellect our god it has, of course, powerful muscles, but no personality.