I decided to sell my drawings. However, I didn't want people to buy my drawings because the professor of physics isn't supposed to be able to draw - isn't that wonderful - so I made up a false name.

Nearly every man who develops an idea works it up to the point where it looks impossible, and then he gets discouraged. That's not the place to become discouraged.

Man, alone, has the power to transform his thoughts into physical reality; man, alone, can dream and make his dreams come true.

You wouldn't believe the kind of hate mail I get about my work on irregular verbs.

Our patience will achieve more than our force.