John Cassian is a study of the fifth-century monk who was one of the founders of western monasticism. Christian monasticism flowered in Egypt during the fourth century. Cassias spent several years in Egypt and his writings are important evidence of the earliest period of monastic life. Later in life Cassian came to Provence and adapted the Egyptian ideals and methods for Latin use. The Benedictine Rule owes much to his influence. Benedictine monks...