During the Middle Ages there were all kinds of crazy ideas, such as that a piece of rhinoceros horn would increase potency. Then a method was discovered for separating the ideas - which was to try one to see if it worked, and if it didn't work, to eliminate it. This method became organized, of course, into science.
Richard P. FeynmanIf the professors of English will complain to me that the students who come to the universities, after all those years of study, still cannot spell 'friend,' I say to them that something's the matter with the way you spell friend.
Richard P. FeynmanOur responsibility is to do what we can, learn what we can, improve the solutions, and pass them on.
Richard P. FeynmanAs you know, a theory in physics is not useful unless it is able to predict underlined effects which we would otherwise expect.
Richard P. FeynmanFirst you guess. Don't laugh, this is the most important step. Then you compute the consequences. Compare the consequences to experience. If it disagrees with experience, the guess is wrong. In that simple statement is the key to science. It doesn't matter how beautiful your guess is or how smart you are or what your name is. If it disagrees with experience, it's wrong. That's all there is to it.
Richard P. Feynman