Aristotle's Theorem of Money

Zippy: I feel like our current society, we've divorced money so much from real things. It's as if we expect money today to have a certain fecundity or fruitfulness that the ancient world didn't expect it to have. He says in order to get something you have to produce something of value to somebody else and simply to get money by virtue of having money seems to go against the very principle of economics. Zippy: The crux of Aquinas' position is also the crux of Islamic finance which does not allow for selling futures contracts.