This volume gives us a fresh translation of two important Christian writings of the 4th Century: (1) The Catechetical Lectures by Cyril, bishop of Jerusalem, at his death in 386: and (2) a treatise on ""the Nature of Man"" by Nemesius, bishop of Emesa in Asia Minor at about the same time. As is the case in the other volumes of this valuable series, the texts are preceded by a most helpful introduction and accompanied by valuable explanatory notes. The lectures by Cyril are important to historians as revealing the content of the instruction given to adult converts in this critical period shortly after the Council of Nicea. Of Nemesius as a person little seems to be known, but his world has often been quoted and translated and is valuable for the light it throws on the teaching of the non-Christian philosophers of the period. Both figures are vital for an understanding of the background of the Eastern Orthodox Church.