Richard Feynman — "I was born not knowing and have had only a little time to change that here and t…"

"I would often go to these conferences where they would talk about the ultimate theory, and I would always say, 'What's the ultimate experiment?'"

"I have a theory that the universe is a great big safe, and that there's a combination to open it. But the combination is locked up in the safe."

"The greatest joy is to understand how nature works."

"I actually did not have to learn a thing for my thesis. It was all stuff I already knew."

"I don't feel frightened by not knowing things, by being lost in a mysterious universe without any purpose, which is the way it really is, as far as I can tell, possibly. It doesn't frighten me."