If all of mathematics disappeared, physics would be set back by exactly one week. Richard P. Feynman More Quotes by Richard P. Feynman More Quotes From Richard P. Feynman All theoretical chemistry is really physics; and all theoretical chemists know it. Richard P. Feynman chemistry physics knows You say you are a nameless man. You are not to your wife and to your child. You will not long remain so to your immediate colleagues if you can answer their simple questions when they come into your office. You are not nameless to me. Do not remain nameless to yourself — it is too sad a way to be. Know your place in the world and evaluate yourself fairly, not in terms of the naïve ideals of your own youth, nor in terms of what you erroneously imagine your teacher's ideals are. Richard P. Feynman simple teacher children You can recognize truth by its beauty and simplicity. When you get it right, it is obvious that it is right -- at least if you have any experience -- because usually what happens is that more comes out than goes in. Richard P. Feynman obvious simplicity truth The fact that you are not sure means that it is possible that there is another way someday. Richard P. Feynman mean facts way 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 P. Feynman philosopher talking mean In fact, the science of thermodynamics began with an analysis, by the great engineer Sadi Carnot, of the problem of how to build the best and most efficient engine, and this constitutes one of the few famous cases in which engineering has contributed to fundamental physical theory. Another example that comes to mind is the more recent analysis of information theory by Claude Shannon. These two analyses, incidentally, turn out to be closely related. Richard P. Feynman engineering mind two The electron is a theory. But the theory is so good we can almost consider them real. Richard P. Feynman electrons theory real If there is something very slightly wrong in our definition of the theories, then the full mathematical rigor may convert these errors into ridiculous conclusions. Richard P. Feynman errors may science (Joan,1941) She wrote me a letter asking,"How can I read it?,Its so hard." I told her to start at the beginning and read as far as you can get until you're lost. Then start again at the beginning and keep working through until you can understand the whole book. And thats what she did Richard P. Feynman asking letters book Nature's imagination far surpasses our own. Richard P. Feynman imagination Since then I never pay attention to anything by "experts". I calculate everything myself. Richard P. Feynman experts pay attention The theoretical broadening which comes from having many humanities subjects on the campus is offset by the general dopiness of the people who study these things. Richard P. Feynman humorous science people If you know that you are not sure, you have a chance to improve the situation. I want to demand this freedom for future generations. Richard P. Feynman demand generations want Once we were driving in the midwest and we pulled into a McDonald's. Someone came up to me and asked me why I have Feynman diagrams all over my van. I replied, "Because I am Feynman!" The young man went, "Ahhhhh!" Richard P. Feynman mcdonalds atheism men Today's brains are yesterday's mashed potatoes. Richard P. Feynman yesterday brain today Everything we know is only some kind of approximation, because we know that we do not know all the laws yet. Therefore, things must be learned only to be unlearned again or, more likely, to be corrected. Richard P. Feynman skepticism kind law When I found out that Santa Claus wasn't real, I wasn't upset; rather, I was relieved that there was a much simpler phenomenon to explain how so many children all over the world got presents on the same night! The story had been getting pretty complicated -- it was getting out of hand. Richard P. Feynman real night children It is odd, but on the infrequent occasions when I have been called upon in a formal place to play the bongo drums, the introducer never seems to find it necessary to mention that I also do theoretical physics. Richard P. Feynman theoretical-physics play science No man is rich who is unsatisfied, but who wants nothing possess his heart's desire. Richard P. Feynman desire heart men You see, the chemists have a complicated way of counting: instead of saying "one, two, three, four, five protons", they say, "hydrogen, helium, lithium, beryllium, boron." Richard P. Feynman three numbers two
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