Richard Feynman Quotes by James Gleick, Leonard Susskind, Charles Hard Townes and many others.
For [Richard] Feynman, the essence of the scientific imagination was a powerful and almost painful rule. What scientists create must match reality. It must match what is already known. Scientific creativity is imagination in a straitjacket.
“Half genius and half buffoon,” Freeman Dyson … wrote. … [Richard] Feynman struck him as uproariously American-unbuttoned and burning with physical energy. It took him a while to realize how obsessively his new friend was tunneling into the very bedrock of modern science.
[Richard Feynman] truly believed that if you couldn’t explain something simply, you didn’t understand it.
The late Richard Feynman, a superb physicist, said once as we talked about the laser that the way to tell a great idea is that, when people hear it, they say, ‘Gee, I could have thought of that.’