A year ago, Professor Robert George’s keynote address at the National Catholic Prayer Breakfast drew national attention. He challenged Catholics to bear witness boldly to the sanctity of human life and the conjugal understanding of marriage, despite the opprobrium that might come our way for proclaiming these profound but not-always-welcome moral truths. He revisited the main themes of his Prayer Breakfast address in his lecture at the Church of St. Gregory the Great on April 7, 2015. The lecture, “Do Not Be Ashamed of the Gospel: Bearing Moral Witness in the Public Square” explored the relationship between the obligation to bear moral witness and the concepts of Christian discipleship and the universal call to holiness. Robert P. George is McCormick Professor of Jurisprudence and Director of the James Madison Program in American Ideals and Institutions at Princeton University. He is currently a vice chair of the U.S. Commission on International Religious Freedom and holds degrees in law and theology from Harvard University and a doctorate in philosophy of law from Oxford University, in addition to many honorary degrees. He is the author or editor of numerous books in the fields of constitutional law, ethics, and legal and political philosophy. Professor George is an internationally known speaker and TV/radio guest.