His most recent books are the edited collection "What Adam Smith Knew" and the manuscript "The End of Socialism", which was published by Cambridge University Press in 2014. In his review of "The End of Socialism," Bradley Birzer called the book "one of the best books written on political thought and the philosophy of classical liberalism since Friedrich Hayek's "The Constitution of Liberty."" James Bruce claims that the book's "moral critique of socialism" is "so important, and so powerful." And Loren Lomasky writes, ""The End of Socialism" is erudite, exceedingly well informed, and some 800 percent more massive than the forerunner G. A. Cohen's "Why Not Socialism?" that it far exceeds in argumentative power.