Introduction 1. Weber: Rationalization and Disenchantment 2. Horkheimer and Adorno: Irrational Reason 3. Habermas: Lifeworld and System 4. Marcuse: Reason and Pleasure 5. Husserl: Phenomenology and the Crisis of the Sciences 6. Early Heidegger: Existential Phenomenology 7. Gadamer: Truth versus Method 8. Arendt: The Human Condition 9. Later Heidegger: Godless Theology Conclusion. Index