Why Liberalism Failed by Patrick J. Deneen: Conversation Starters Why Liberalism Failed is the latest political philosophy book by Patrick Deneen. Throughout the twentieth century, there were only three, main political ideologies. These ideologies were liberalism, communism, and fascism. Of those three, Deneen writes that only liberalism is left standing. In the opinion of Deneen, people have started to forget that liberalism is only an ideology...