There are theoretical physicists who imagine, deduce, and guess at new laws, but do not experiment; and then there are experimental physicists who experiment, imagine, deduce, and guess. Richard P. Feynman More Quotes by Richard P. Feynman More Quotes From Richard P. Feynman There is a computer disease that anybody who works with computers knows about. It's a very serious disease and it interferes completely with the work. The trouble with computers is that you 'play' with them! Richard P. Feynman diseaseseriousplay All theoretical chemistry is really physics; and all theoretical chemists know it. Richard P. Feynman chemistryphysicsknows 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 simpleteacherchildren 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 obvioussimplicitytruth The fact that you are not sure means that it is possible that there is another way someday. Richard P. Feynman meanfactsway 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 philosophertalkingmean 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 engineeringmindtwo The electron is a theory. But the theory is so good we can almost consider them real. Richard P. Feynman electronstheoryreal 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 errorsmayscience (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 askinglettersbook 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 expertspayattention 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 humoroussciencepeople 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 demandgenerationswant 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 mcdonaldsatheismmen Today's brains are yesterday's mashed potatoes. Richard P. Feynman yesterdaybraintoday 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 skepticismkindlaw 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 realnightchildren 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-physicsplayscience No man is rich who is unsatisfied, but who wants nothing possess his heart's desire. Richard P. Feynman desireheartmen
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