"We are so accustomed to the miracle of private enterprise that we habitually take it for granted. But how does private industry solve the incredibly complex problem of turning out tens of thousands of different goods and services in the proportions in which they are wanted by the public? ... It solves these problems through the institutions of private property, competition, the free market, and the existence of money - through the interrelations of supply and demand, costs and prices, profits and losses."