"All this may seem somewhat elementary. But consider what Adam Smith has done, with his impetus of self-interest and his regulator of competition. First, he has explained how prices are kept from ranging arbitrarily away from the actual cost of producing a good. Second, he has explained how society can induce its producers of commodities to provide it with what it wants. Third, he has pointed out why high prices are a self-curing disease, for they cause production in those lines to increase. And finally, he has accounted for a basic similarity of incomes at each level of the great producing strata of the nation. In a word, he has found in the mechanism of the market a self-regulating system for society’s orderly provisioning."