Craig A. Boyd is Professor of Philosophy & Humanities in the School for Professional Studies at Saint Louis University in St. Louis, MO. His academic interests include the work of St. Thomas Aquinas, natural law ethics, studies in charity and humility, issues at the intersection of evolution and normative ethical theory, and the moral thought of J.R.R. Tolkien.
Kevin Timpe holds the William H. Jellema Chair in Christian Philosophy at Calvin College. He has been a visiting faculty or scholar at Calvin Theological Seminary, Innsbruck University, Oxford University, and Peking University. He has written and edited ten books and published nearly 50 articles. Most of his scholarly writing focuses on issues of free will, virtue ethics, philosophical theology, and the philosophy of disability.