Caputo has a special interest in continental approaches to the philosophy of religion. Some of the ideas Caputo investigates in his work include the "religion without religion" of Jacques Derrida; the "theological turn" taken in recent French phenomenology by Jean-Luc Marion and others; the critique of ontotheology; the dialogue of contemporary philosophy with Augustine of Hippo and Paul of Tarsus; and medieval metaphysics and mysticism. In the past, Caputo has taught courses on Søren Kierkegaard, Friedrich Nietzsche, Edmund Husserl, Martin Heidegger, Emmanuel Levinas, Gilles Deleuze, and Jacques Derrida.
