The development of physics, like the development of any science, is a continuous one.

The whole structure of science gradually grows, but only as it is built upon a firm foundation of past research.

What 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.

All science is either physics or stamp collecting.

Each generation of scientists stands upon the shoulders of those who have gone before.

If you've never done anything wrong it's probably because you have never tried anything new.