January, 6, 1885. vi N.B.—The following advertisement of the original editors will be useful here:— The Ante-Nicene Christian Library is meant to comprise translations into English of all the extant works of the Fathers down to the date of the first General Council held at Nice in a.d. 325. The sole provisional exception is that of the more bulky writings of Origen. It is intended at present only to embrace in the scheme the Contra Celsum and the De Principiis of that voluminous author; but the whole of his works will be included should the undertaking prove successful. The present volume has been translated by the Editors.1 Their object has been to place the English reader as nearly as possible on a footing of equality with those who are able to read the original. With this view they have for the most part leaned towards literal exactness; and wherever any considerable departure from this has been made, a verbatim rendering has been given at the foot of the page. Brief introductory notices have been prefixed, and short notes inserted, to indicate varieties of reading, specify references, or elucidate any obscurity which seemed to exist in the text. Edinburgh, 1867. 1 This refers to the first volume only of the original series. 3 Preface