The electron is a theory we use; it is so useful in understanding the way nature works that we can almost call it real.
Richard P. FeynmanIf I could explain it to the average person, I wouldn't have been worth the Nobel Prize.
Richard P. FeynmanI love to think. I once considered taking drugs as an attempt to better understand an altered state of mind; however, I decided not to. I didn't want to chance ruining the machine.
Richard P. FeynmanSo, ultimately, in order to understand nature it may be necessary to have a deeper understanding of mathematical relationships. But the real reason is that the subject is enjoyable, and although we humans cut nature up in different ways, and we have different courses in different departments, such compartmentaliz ation is really artificial, and we should take our intellectual pleasures where we find them.
Richard P. Feynman