St. John of Damascus (ca. 675-749) is generally regarded as the last great figure of Greek Patrology. Outstandingly important for his support of images in the Iconoclastic Controversy, this priest-monk of St. Sabbas near Jerusalem is known also for his treatment of Christian morality and asceticism (the Sacred Parallels), for a small but precious group of powerful sermons, and even for verse contributions to the Greek liturgy. His reputation rests...