"This is a reprint of William Watts' translation (with Scripture references), corrected according to Knöll's text, with the help of the translations of Pusey (1838) and C. Biggs (Books I. to IX.; Methuen, 1897-1909) and the annotated text of J. Gibb and W. Montgomery (Cambridge Patristic texts, 1908)."--Pref.