This is a study of the life, monastic writings and spiritual theology of John Cassian (c.365-430). Cassian's writings were the bridge between eastern monasticism and the developing Latin monasticism of Southern Gaul, and exerted a major influence on the Rule of Benedict and the theology of Gregory the Great.

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.

Though eight years have elapsed since its publication, this remains an important book