In our modern era, the ancient sin of covetousness primarily manifests itself in three forms: greed, theft, and arguments about inequality. The greedy selfishly desire to acquire what others have, thieves illicitly acquire what others have, and equality advocates want the government to redistribute what others have.

It would be unfair, of course, to assume that all critics of inequality are driven by covetousness. But if you stripped away that sin as a motivation, the number of people who care about inequality could be fit into an Occupy Wall Street drum circle.

Imagine if we all took a vow to shun covetousness, especially when advocating public policies. Garett Jones suggest we do just that, with his proposal for the creation of the Tenth Commandment Club:

The mandment—”You shall not covet”—is a foundation of social peace. The Nobel Laureate economist Vernon Smith noted the mandment along with the eighth (you shall not steal) in his Nobel toast, saying that they “provide the property right foundations for markets, and warned that petty distributional jealousy must not be allowed to destroy” those foundations. If academics, pundits, and columnists would avowedly reject covetousness, would openly parisons between the average (extremely fortunate) American and the average billionaire, would mock people who claimed that frugal billionaires are a systematic threat to modern life, then soon our time could be spent discussing policy issues that really matter.

People who are genuinely materially desperate aren’t the issue here. The Tenth Commandment Club has no qualms with a Jean Valjean stealing bread to feed his family. But the implicit emphasis of Piketty’s Capital is paring the 1 percent (or 0.01 percent) to the typical person living in the G-7, a person who is, on average, more fortunate than most of the world’s population and more materially fortunate than almost anyone living in the 19th-century novels that Piketty so loves to discuss. To paraphrase an old P.J. O’Rourke joke, just think about Mr. Darcy’s visits to the dentist.

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