"There is no harm in doubt and skepticism, for it is through these that new discoveries are made."

"The thing that I cannot understand is what I cannot create. And I can't create a universe. So I don't understand the universe."

"I'm not a deep thinker. I'm a practical thinker."

"The great thing about science is that it's a way of not fooling yourself."

"I got a dollar for my patent! I give it to everybody. Result: everybody who has one of these patent because it was easy a lot of people had been sending things in lots of patents. Everybody come down …"