Robert P. George holds Princeton's celebrated McCormick Chair in Jurisprudence and is the Director of the James Madison Program in American Ideals and Institutions. He has served as chairman of the United States Commission on International Religious Freedom, and before that on the President's Council on Bioethics and as a presidential appointee to the United States Commission on Civil Rights. He has also served as the U.S. member of UNESCO's World Commission on the Ethics of Scientific Knowledge and Technology. His many books include In Defense of Natural Law; Making Men Moral; Embryo: A Defense of Human Life; What is Marriage? Man and Woman: A Defense. A graduate of Swarthmore College, he holds J.D. and M.T.S. degrees from Harvard University and the degrees of D.Phil., B.C.L., and D.C.L. from Oxford University.

R. J. Snell directs the Center on the University and Intellectual Life at the Witherspoon Institute in Princeton, NJ. Prior to this appointment he was for many years Professor of Philosophy and Director of the Philosophy Program at Eastern University and the Templeton Honors College, where he founded and directed the Agora Institute for Civic Virtue and the Common Good. A convert to Catholicism, he grew up Baptist and received his early education at the schools of Prairie Bible Institute and Liberty University. His first encounter with Rome occurred while pursuing an M.A. in philosophy at Boston College, where he took several courses with Peter Kreeft. Later he earned a Ph.D. in philosophy at Marquette University. He is the author of several books as well as articles, chapters, and essays in a variety of scholarly and popular venues.