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A scientist is never certain. ... We absolutely must leave room for doubt or there is no progress and there is no learning.
Richard Feynman
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For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled.
Richard Feynman
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There is enough energy in a single cubic meter of space to boil all the oceans in the world.
Richard Feynman
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What do I advise? Forget it all. Don't be afraid. Do what you get the most pleasure from. Is it to build a cloud chamber? Then go on doing things like that. Develop your talents wherever they may lead. Damn the torpedoes - full speed ahead!If you have any talent,or any occupation that delights you,do it, and do it to the hilt
Richard Feynman
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Light is something like raindrops each little lump of light is called a photon and if the light is all one color, all the "raindrops" are the same.
Richard Feynman
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Some people say, "How can you live without knowing?" I do not know what they mean. I always live without knowing. That is easy. How you get to know is what I want to know.
Richard Feynman
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If you don't like it, go somewhere else, to another universe where the rules are simpler.
Richard Feynman
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A philosopher once said, 'It is necessary for the very existence of science that the same conditions always produce the same results.' Well, they don't!
Richard Feynman
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Mathematics is not just a language. Mathematics is a language plus reasoning.
Richard Feynman
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There's plenty of room at the bottom.
Richard Feynman
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Our poets do not write about it; our artists do not try to portray this remarkable thing. I don't know why. Is nobody inspired by our present picture of the universe? The value of science remains unsung by singers... This is not yet a scientific age.
Richard Feynman
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Science is what we have learned about how to keep from fooling ourselves.
Richard Feynman
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[Quantum mechanics] describes nature as absurd from the point of view of common sense. And yet it fully agrees with experiment. So I hope you can accept nature as She is - absurd.
Richard Feynman
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In those days, in Far Rockaway, there was a youth center for Jewish kids at the temple.... Somebody nominated me for president of the youth center. The elders began getting nervous, because I was an avowed atheist by that time.... I thought nature itself was so interesting that I didn't want it distorted like that. And so I gradually came to disbelieve the whole religion.
Richard Feynman
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I always do that, get into something and see how far I can go.
Richard Feynman
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The "paradox" is only a conflict between reality and your feeling of what reality "ought to be."
Richard Feynman
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I love only nature, and I hate mathematicians.
Richard Feynman
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To develop working ideas efficiently, I try to fail as fast as I can.
Richard Feynman
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I don't like honors. ... I've already got the prize: the prize is the pleasure of finding the thing out, the kick in the discovery, the observation that other people use it. Those are the real things.
Richard Feynman
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We cannot define anything precisely. If we attempt to, we get into the paralysis of thought that comes to philosophers, who sit opposite each other, one saying to the other, "You don't know what you are talking about!" The second one says, "What do you mean by know? What do you mean by talking? What do you mean by you?"
Richard Feynman
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All the time you're saying to yourself, 'I could do that, but I won't,'--which is just another way of saying that you can't.
Richard Feynman
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Physicists like to think that all you have to do is say, these are the conditions, now what happens next?
Richard Feynman
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Philosophy of science is about as useful to scientists as ornithology is to birds.
Richard Feynman
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It turns out that all life is interconnected with all other life.
Richard Feynman
