In my experience, the best creative work is never done when one is unhappy.

Whatever your problems in math are, I assure mine are greater.

It is our American habit if we find the foundations of our educational structure unsatisfactory to add another story or wing.

I believe my theory of relativity to be true. But it will only be proved for certain in 1981, when I am dead.

The Constitution only guarantees the American people the right to pursue happiness. You have to catch it yourself. A table, a chair, a bowl of fruit and a violin; what else does a man need to be happy?

My religion consists of a humble admiration of the illimitable superior spirit who reveals himself in the slight details we are able to perceive with our frail and feeble mind.

I am not a genius, I am just curious. I ask many questions. and when the answer is simple, then God is answering.