Philosophy of science is about as useful to scientists as ornithology is to birds.

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.

What I cannot create, I do not understand.

You can always recognize truth by its beauty and simplicity.

The worthwhile problems are the ones you can really solve or help solve, the ones you can really contribute something to... No problem is too small or too trivial if we can really do something about it.

While I am describing to you how Nature works, you won't understand why Nature works that way. But you see, nobody understands that.

Physics is like sex: sure, it may give some practical results, but that's not why we do it.