Catholic ecclesiology stands at the threshold of a new moment in the reception of the Second Vatican Council. The election of Pope Francis- coinciding with the fiftieth anniversary of the council-has inspired a fresh consideration of its teaching in such diverse areas as ecumenism, inculturation, missiology, and ministry. The chapters in this volume have their origin in a special symposium honoring the ecclesiological legacy of Thomas F. O'Meara, OP. The symposium called together over forty leading North American scholars in order to discuss the future of Catholic theological reflection on the church-a conversation that offers an entry into some of the most pressing issues in ecclesiology today.