Gerard Mannion holds the Joseph and Winifred Amaturo Chair in Catholic Studies at Georgetown University, Washington DC, where he is also a Senior Research Fellow of the Berkley Center for Religion, Peace and World Affairs. To date, he has authored, co-authored and edited nineteen books and numerous writings elsewhere in the fields of ecclesiology, ethics, social justice, ecumenism and interreligious dialogue, as well as in other aspects of systematic theology and philosophy. In 2013 he was elected to membership of the American Theological Society.