What I cannot create, I do not understandRichard Feynman
Ideas are the easiest things to changeRichard Feynman
In this age of specialization men who thoroughly know one field are often incompetent to discuss anotherRichard Feynman
It doesn't matter how beautiful your theory is, it doesn't matter how smart you are. If it doesn't agree with experiment, it's wrongRichard Feynman
All you have to do is look closely and carefully, and at length, and uninfluenced by kind of expectation whatsoeverRichard Feynman