As numerous economists and positive psychologists have observed, globally we make the mistake of becoming less social the richer we become as individuals, and as a society. As Weiner observes: “The greatest source of happiness is other people—and what does money do? It isolates us from other people. It enables us to build walls, literal and figurative, around ourselves. We move from a teeming college dorm to an apartment to a house and, if we’re really wealthy, to an estate. We think we’re moving up, but really we’re walling off ourselves.”13