2009 Reprint of original 1956 edition. Paperback, 114pp. Mises wrote and lectured extensively on behalf of classical liberalism and is seen as one of the leaders of the Austrian School of economics. Mises introduced praxeology as a more general conceptual foundation of the social sciences and established that economic laws were only arrived at through the means of methodological individualism firmly rejecting positivism and materialism as a foundation for the social sciences. Many of his works were on two related economic themes:1. Monetary economics and inflation; 2. The differences between government controlled economies and free trade.