The Spirituality of John Cassian was written by Ron Samuel Dart, an Anglican layman from Abbotsford, British Columbia, Canada. Dart’s 2006 book is a published rework of his Master’s thesis, earned from Regent College in 1981. (After his first M.A. Dart earned a second from the University of British Columbia, completing then a thesis on “Origen and Anthony,” two men who played a key role in Cassian’s life and ministry.) Dart is a professor of philosophy and religious studies at University of the Fraser Valley in BC. He is a prolific writer and teacher who regularly engages the “politics” of church and society in a refreshing but classical manner. In his personal life Dart commonly exerts his Anglo-Catholic belief and commitment through his mentoring and ecumenical efforts as well as his contemplative practices. He is also a Thomas Merton scholar, a poet and a mountaineering expert and instructor. He says clearly in the Preface that he wrote his book out of a commitment to the Church Fathers’ “…more mystical, contemplative and existential way of doing theology in opposition to a more rationalist, confessional and scholastic way of doing theology that dominated much of the Western Tradition” (1). He was also drawn to Cassian’s “…wise, sane and ecumenical…” thought and theology that brought together the best and wisest of the patristic East and West “…in a transformative way” (2-3).