If someone were to propose that the planets go around the sun because all planet matter has a kind of tendency for movement, a kind of motility, let … - Richard Feynman

There was no way, without full understanding, that one could have confidence that conditions the next time might not produce erosion three times more severe than the time before. Nevertheless, officials fooled themselves into thinking they had such understanding and confidence, in spite of the peculiar variations from case to case. A mathematical model was made to calculate erosion. This was a model based not on physical understanding but on empirical curve fitting.

The question of whether or not, when you see something, you see only the light or you see the thing you're looking at, is one of those dopey philosophical things that an ordinary person has no difficulty with. Even the most profound philosopher, when sitting, eating his dinner, hasn't any difficulty in making out that what he looks at perhaps might be only the light from the steak, but it still implies the existence of the steak, which he is able to lift by the fork to his mouth. The philosophers that were unable to make that analysis and that idea, have fallen by the wayside through hunger!

I couldn't claim that I was smarter than sixty-five other guys — but the average of sixty-five other guys, certainly!