This book is a study of the life, monastic writings, and spiritual theology of John Cassian (c., 360-435). His Institutes and Conferences are a remarkable synthesis of earlier monastic traditions, especially those of fourth-century Egypt, informed throughout by Cassian's awareness of the particular needs of the Latin monastic movement he was helping to shape. Sometimes portrayed as simply an advocate of the sophisticated spiritual theology of Evagrius of Ponticus (360-435), Cassian was actually a theologian of keen insight, realism, and creativity. His teaching on...