My review of Ben Friedman's The Moral Consequences of Economic Growth http://www.amazon.com/exec/obido/asin/0679448918/braddelong00 is up at Harvard Magazine http://www.harvardmagazine.com/:

Growth is Good: An economist's take on the moral consequences of material progress; by J. Bradfold Delong

Economists have always been very good at detailing the material consequences of modern economic growth. It makes us taller: we are perhaps seven inches taller than our preindustrial ancestors. It makes us healthier: babies today have life expectancies in the seventies, not the twenties (and more than half that improvement is not directly related to better medical technology, narrowly defined). It provides us with leisure: eight-hour workdays (rather than “Man’s work is from sun to sun, and woman’s work is never done.”) It provides us with enough clothing that we are not cold, enough shelter that we are not wet, and enough food that we are not hungry. It provides us with amusements and diversions, so that there is more to do in the evenings than huddle around the village campfire and listen yet again to that blind poet from the other side of the Aegean tell the only long story he knows—the one about Achilles and Agamemnon. As time passes, what were luxuries become, first, conveniences, and then necessities; what were utopian dreams become first luxuries and then conveniences; and what was unimagined even in wild fantasy becomes first utopian dreams and then luxuries.

Economists have been less good at detailing the moral consequences of economic growth. There are occasional apothegms: John Maynard Keynes observed that it is better for a man to tyrannize over his bank balance than his fellows (a rich society has an upper class that focuses on its wealth as power-over-nature, rather than on its power as power-over-people). Adam Smith wrote about how wealth made it attractive for the British aristocracy to abandon their feudal armies and private wars and move to London to take up positions in society and at court. Voltaire (who not even I can claim was an economist) observed that people who in other circumstances would try to kill each other for worshipping the wrong god (or the right god in the wrong way) were perfectly polite and civil when they met each other as potential trading partners on the floor of the London Exchange. Albert Hirschman (who is an economist) wrote a brilliant little book, The Passions and the Interests, about the eighteenth-century idea that commercial society made humans “sweet”: polite, courteous, and civilized, viewing one another as potential partners in mutually beneficial market exchanges, rather than as clan members to be helped, clan enemies to be killed, or strangers to be robbed. But focus on the moral consequences of economic growth has—from the economists’ side, at least—been rare.

Benjamin M. Friedman ’66, Jf ’71, Ph.D. ’71, Maier professor of political economy, now fills in this gap: he makes a powerful argument that—politically and sociologically—modern society is a bicycle, with economic growth being the forward momentum that keeps the wheels spinning. As long as the wheels of a bicycle are spinning rapidly, it is a very stable vehicle indeed. But, he argues, when the wheels stop—even as the result of economic stagnation, rather than a downturn or a depression—political democracy, individual liberty, and social tolerance are then greatly at risk even in countries where the absolute level of material prosperity remains high....