"Knowing how to calculate something is not the same as understanding it. Having a computer to calculate the origin of mass for us may be convincing, but is not satisfying. Fortunately we can understand it too."

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I found the most convincing part to be the working stiffs, the guys who have a modest home and kids who go to public schools. They make $75,000 to $100,000 a year. That's not much to live on. I don't have to tell you that.

— Jack Valenti