The Institute for the Study of Religions and Cultures and the Cardinal Bea Centre for Judaic Studies at the Gregorian University in Rome, Italy will host an international conference to mark the 40th anniversary of the declaration "Nostra Aetate" of the Second Vatican Council, which opened a new era in interreligious relations so far as the Roman Catholic Church is concerned. The Conference will be held September 25-28, 2005, and will focus on the way in which people of various faiths have come to a new understanding of their own tradition through engagement with another tradition. Successive days will concentrate on Jewish-Christian relations, on Christian relations with the religious traditions of Asia, and on Muslim-Christian relations. The Conference is being organized in collaboration with Georgetown University, Washington, DC; the Cardinal Bernardin Center at Catholic Theological Union, Chicago; the Center for Christian-Jewish Learning at Boston College; and Sacred Heart University, Fairfield, Connecticut. Registration materials are available at Conference.pdf.