“I believe there's nothing in hallucinations that has anything to do with anything external to the internal psychological state of the person who's got the hallucination.” — Richard Feynman Copy Share Image
“From a long view of the history of mankind-seen from, say, ten thousand years from now-there can be little doubt that the most significant… — Richard Feynman Copy Share Image
“All of our ideas in physics require a certain amount of common sense in their application; they are not purely mathematical or abstract ideas.” — Richard Feynman Copy Share Image
“I was an ordinary person who studied hard. There are no miracle people. It happens they get interested in this thing and they learn… — Richard Feynman Copy Share Image
“If a Martian (who, we'll imagine, never dies except by accident) came to Earth and saw this peculiar race of creatures - these humans… — Richard Feynman Copy Share Image
“The guy says, “Buddy, the housing situation in Ithaca is tough. In fact, it’s so tough that, believe it or not, a professor had… — Richard Feynman Copy Share Image
“It doesn't matter how beautiful your theory is ... If it doesn't agree with experiment, it's wrong.” — Richard Feynman Copy Share Image
“Although my mother didn't know anything about science, she had a great influence on me as well. In particular, she had a wonderful sense… — Richard Feynman Copy Share Image
“Take this neat little equation here. It tells me all the ways an electron can make itself comfortable in or around an atom. That's… — Richard Feynman Copy Share Image
“To every man is given the key to the gates of heaven. The same key opens the gates of hell. And so it is… — Richard Feynman Copy Share Image
“But wait,” he said. “Let’s suppose it returns by advanced waves—reactions backward in time—so it comes back at the right time. We saw the… — Richard Feynman Copy Share Image
