"The problem with the world is that the intelligent people are full of doubts, while the stupid ones are full of confidence."

"I think it's important to have a sense of humor about the universe. It's a pretty absurd place, after all."

"The greatest discoveries in science are not always the ones that get the most attention."

"I would say, if you're not failing, you're not trying hard enough."

"The universe is a symphony, and we are all instruments in it."