"The three quarters of century that followed Austria’s collapse in the 1930s can be seen as a duel between Keynes and Hayek. Keynes, as I was saying, begins with the observation that under conditions of economic uncertainty we would be imprudent to assume stable outcomes and therefore had better devise ways to intervene in order to bring these about. Hayek, writing quite consciously against Keynes and from the Austrian experience, argues in the The Road to Serfdom that intervention—planning, however benevolent or well-intentioned and whatever the political context—must end badly. His book was published in 1945 and is most remarkable for its prediction that the post–World War II British welfare state already in the making should anticipate a fate similar to that of the socialist experiment in post-1918 Vienna. Starting with socialist planning, you would end with Hitler or a comparable successor. For Hayek, in short, the lesson of Austria and indeed the disaster of interwar Europe at large boiled down to this: don’t intervene, and don’t plan. Planning hands the initiative to those who would, in the end, destroy society (and the economy) to the benefit of the state. Three quarters of a century later, this remains for many people (especially here in the U.S.) the salient moral lesson of the twentieth century."