My interest in science was always essentially limited to the study of principles. . . . That I have published so little is due to this same circumstance, as the great need to grasp principles has caused me to spend most of my time on fruitless pursuits.
I have this theory that there are two kinds of people in the world, people who stop at a traffic accident and those that just drive by. If I see a traffic accident, I am going to stop. I do notice. I don't think that makes me a good or bad person, or anybody else better or worse.