I never quit until I get what I want.

I told [Kruesi] I was going to record talking, and then have the machine talk back. He thought it absurd. However, it was finished, the foil was put on; I then shouted "Mary had a little lamb," etc. I adjusted the reproducer, and the machine reproduced it perfectly. On first words spoken on a phonograph.

Genius is one percent inspiration and ninety-nine percent perspiration. As a result, a genius is often a talented person who has simply done all of his homework.

Five percent of the people think; ten percent of the people think they think; and the other eighty-five percent would rather die than think.

Accomplishing something provides the only real satisfaction in life.

Our greatest weakness lies in giving up.

I never view mistakes as failures. They are simply opportunities to find out what doesn't work.