"I owe my success to the fact that I never had a clock in my workroom. Seventy-five of us worked twenty hours every day and slept only four hours — and thrived on it."

"I have not failed. I've just found 10,000 ways that won't work."

"I am not a believer in the theory of evolution. I believe in the theory of creation. I believe that God created the world and everything in it."

"I told [John 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', e…"

"I never did anything worth doing by accident, nor did any of my inventions come by accident; they came by work."