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.

There is great value in disaster. All our mistakes are burned up. Thank God we can start a new.

Genius is 1 percent inspiration, 99 percent perspiration.

Invention is 10% inspiration and 90% perspiration.

Youth doesn't take advice.

Success depends on how many experiments you can fit into 24 hours

We haven't failed. We now know a thousand things that won't work, so we are much closer to finding what will.