Matthias Stefan studies philosophy at the Theological Faculty Innsbruck, Austria. Since 2006, he is a scientific collaborator in the Department of Philosophy at the same institution. He is a member of the LSI group at Innsbruck since its foundation in 2005. His special areas of interest are ontological commitments of contemporary naturalism, the epistemic justification of naturalism, and the philosophy of worldviews. Actually he is writing his MA thesis on rationality and worldviews with a special focus on Ted Peters’ interdisciplinary work.