Oswald Spengler's Decline of the West, Ernst Bloch's Spirit of Utopia, Hermann Hesse's Glimpse Into Chaos, Edmund Husserl's The Crisis in European Science, Karl Kraus's The Last Days of Mankind, Arthur Koestler's The Ghost in the Machine, Robert Musil's The Man Without Qualities, Jose Ortega y Gasset's The Revolt of the Masses, Martin Heidegger's Being and Time, Rene Guenon's The Reign of Quantity, Thomas Mann's The Magic Mountain, Colin Wilson's The Outsider--the list could go on.