Father Gerry O’Collins, S.J., is an Australian Jesuit priest who is professor emeritus of theology at the Gregorian University, in Rome, where he has lectured since 1974 and the 2006-2007 Wade Chair Holder at Marquette University. Father O’Collins is the author or co-author of over forty titles including Living Vatican II (2006), Catholicism (2003), Easter Faith: Believing in the Risen Jesus (Paulist Press, 2004), The Incarnation (Continuum International Publishing Group, 2002) and Experiencing Jesus (2001).