| Catholicism: The Story of Catholic Christianity Gerald O'Collins, S. J., Professor Emeritus of Gregorian University, Rome, ,Mario Farrugia, S. J., Professor of Systematic Theology, Gregorian University, Rome Gerald O'Collins, S.J., A.C., is Professor Emeritus of Gregorian University, Rome. Mario Farrugia, S.J., is Professor of Systematic Theology at Gregorian University, Rome. |