Most people see what is, and never see what can be.

The finest emotion of which we are capable is the mystic emotion.

I owe as much of my success to an uncompromising obstinacy as to any original ideas.

New frameworks are like climbing a mountain - the larger view encompasses rather than rejects the more restricted view.

Relativity is a purely scientific matter and has nothing to do with religion.

If I had an hour to solve a problem and my life depended on the solution, I would spend the first 55 minutes determining the proper question to ask, for once I know the proper question, I could solve the problem in less than five minutes.

I am not more gifted than anybody else. I am just more curious than the average person and I will not give up a problem until I have found the proper solution.