1. "The Quest for Meaning: Values, Ethics and the Modern Experience." A series of 24 lectures recorded on video and audio tapes. Published by The Teaching Company (Springfield, Virginia), The Great Courses on Tape Series, 1999

2. "Immanual Kant: His Epistemological and Moral Ideas." Two lectures in the series "Great Minds of the Western Tradition" recorded on video and audio tapes. Published by The Teaching Company (Springfield, Virginia, The Great Courses on Tape Series, 2000