"This new volume by Professor von Mises has the same texture and tone as his earlier books on Human Action and Socialism. There are frequent crossreferences, and both the methods of argument and the conclusions are perfectly consistent. The defence of the liberal market economy and of economics and 'praxeology' as wertfrei intellectual studies with 'unique epistemological character' will be familiar to all his readers. The defence, of course, is most frequently a scathing attack. Never can the market economy have been handled so stridently or the history of ideas so brusquely."