God was invented to explain mystery. God is always invented to explain those things that you do not understand.
Richard P. FeynmanThe real question of government versus private enterprise is argued on too philosophical and abstract a basis. Theoretically, planning may be good. But nobody has ever figured out the cause of government stupidityโand until they do (and find the cure), all ideal plans will fall into quicksand.
Richard P. FeynmanWhat I am going to tell you about is what we teach our physics students in the third or fourth year of graduate school... It is my task to convince you not to turn away because you don't understand it. You see my physics students don't understand it... That is because I don't understand it. Nobody does.
Richard P. FeynmanSome people think Wheeler's gotten crazy in his later years, but he's always been crazy.
Richard P. FeynmanSo my antagonist said, "Is it impossible that there are flying saucers? Can you prove that it's impossible?" "No," I said, "I can't prove it's impossible. It's just very unlikely." At that he said, "You are very unscientific. If you can't prove it impossible then how can you say that it's unlikely?" But that is the way that is scientific. It is scientific only to say what is more likely and what less likely, and not to be proving all the time the possible and impossible.
Richard P. Feynman