"Music is part of Number Theory. Nowadays when a number-theorist applies for a grant, he says that it is good for security, but in those days, way before America, he would say that it's good for music. I will not comment whether we have progressed."

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While no inference is intended here, it is worth noting, in connection with Milton Friedman's comment that "Kelso just turned Marx upside down," that it is not necessarily amiss to turn a fellow upside down if that in fact straightens out his thinking.

— Louis O. Kelso