classical writer has given us a really historical account of the Christian religion, or has even with one word referred to the wonderful events which, had they actually taken place as described in the Gospels, would have stirred the uttermost corners of the earth. Celsus is the only writer of the second century who, being neither Christian nor Jew, was not only acquainted with representatives of Christianity and Judaism, but had also, it would seem, carefully read portions of the Old and New Testaments. He even boasts of having a better knowledge of these religions than many of their adherents (II, 12). That such a man considered this new Christian sect of sufficient importance to subject it to a searching investigation, is proof of his deep insight, and at the same time of the increasing power of Christianity as a religion independent of Judaism. Who this Celsus really was, it is not easy to discover. Even his adversary, Origen, seems to know but little of him; at any rate he tells us nothing of him,—indeed, we are even still in doubt about his date. It has been thought that he is the Celsus to whom Lucian (120-200 A.D.) dedicated his work on the false Alexander. This is possible; but Celsus is a very common name, and Origen speaks of two men of this name who were both Epicureans and are supposed to have lived in the times of Nero (54-68 A.D.) and Hadrian (118-138 A.D.). It has been argued that the latter could not have been the author of the _Sermo Verus_, because it apparently mentions the sect of the Marcellians, and this was not founded till the year 155 under Bishop Anicetus. But Origen’s remark, that Celsus may have outlived the reign of Hadrian, has been overlooked. At any rate Origen speaks of the _Sermo Verus_ as a work long known, and as he did not die until the year 253 A.D., in his time the work of Celsus would have been recognised as of considerable age, even if written after the year 155. Much learning has been expended on the identification of Celsus, which seems to me to have been wasted. It is remarkable that Origen made no effort to become personally acquainted with his adversary. He leaves the question open whether he is the same Celsus who composed two other books against the Christians (_Contra Celsum_, IV, 36). At the end of his book he speaks of him as if he had been a contemporary, and asserts that a second book by him against the Christians, which has either not yet been completed or has not yet reached him, shall be as completely refuted as the _Sermo Verus_. Such language is only used of a contemporary. Could it be proved that Celsus was a friend of Lucian, then we should know that in the judgment of the latter he was a noble, truth-loving, and cultivated man. It was not Origen’s interest to emphasise these aspects of his opponent’s character; but it must be said to his credit, that though he was much incensed at some of the charges of Celsus, he never attacked his personal character.