There is a reward structure in science that is very interesting: Our highest honors go to those who disprove the findings of the most revered among us. So Einstein is revered not just because he made so many fundamental contributions to science, but because he found an imperfection in the fundamental contribution of Isaac Newton.
One interesting thing about greed is that although the underlying motive is to seek satisfaction, the irony is that even after obtaining the object of your desire you are still not satisfied. The true antidote of greed is contentment.
One of the interesting things about being in public life is there are constantly these pressures being placed on you from different sides. To be effective, you have to be able to listen to a variety of points of view, synthesize viewpoints.
A photograph is a photograph. When I am making a picture I am just interested in making a very interesting photograph. I don't care where it's going to go.
In the matter of physics, the first lessons should contain nothing but what is experimental and interesting to see. A pretty experiment is in itself often more valuable than twenty formulae extracted from our minds.