Hayek, one of the key thinkers of the twentieth century, has also been much misunderstood. His work has crossed disciplines--economics, philosophy, and political science--as well as national boundaries. He was an early critic of Keynes and became famous in the 1940s for his warnings that the advance of collectivism in Western democracies was the road to serfdom. He was a key figure in the post-war revival of free market liberalism and achieved renewed...