Gregor provides unique insight into the variants of Marxism, Fascism, and National Socialism that dominated our immediate past. He explores the seeds of totalitarianism as secular faith in the nineteenth-century ideologies of Ludwig Feuerbach, Moses Hess, Karl Marx, Friedrich Engels, Giuseppe Mazzini, and Richard Wagner. He follows the growth of those seeds as the twentieth century became host to Leninism and Stalinism, Italian Fascism, and German National Socialism—each a totalitarian institution and a political religion.