philosophers, especially the Cynics, plotted against him, and he sealed his testimony to the truth by martyrdom. The principal facts of Justin’s life are gathered from his own writings. There is little clue to dates. It is agreed on all hands that he lived in the reign of Antoninus Pius, and the testi- mony of Eusebius and most credible historians renders it nearly certain that he suffered martyrdom in the reign of Marcus Aurelius. The Chronicon Paschale gives as the date 165 a.d. The writings of Justin Martyr are among the most important that have come down to us from the second century. He was not the first that wrote an Apology in behalf of the Christians, but his Apologies are the earliest extant. They are characterized by intense Christian fervour, and they give us an insight into the relations existing between heathens and Christians in those days. His other principal writing, the Dialogue with Trypho, is the first elaborate exposition of the reasons for regarding Christ as the Messiah of the Old Testament, and the first systematic attempt to exhibit the false position of the Jews in regard to Christianity. Many of Justin’s writings have perished. Those works which have come to us bearing his name have been divided into three classes. 161 The first class embraces those which are unquestionably genuine, viz. the two Apologies, and the Dialogue with Trypho. Some critics have urged objections against Justin’s authorship of the Dialogue; but the objections are regarded now as possessing no weight. The second class consists of those works which are regarded by some critics as Justin’s, and by others as not his. They are: 1. An Address to the Greeks; 2. A Hortatory Address to the Greeks; 3. On the Sole Government of God; 4. An Epistle to Diognetus; 5. Fragments from a work on the Resurrection; 6. And other Fragments. Whatever difficulty there may be in settling the authorship of these treatises, there is but one opinion as to their earliness. The latest of them, in all probability, was not written later than the third century. The third class consists of those that are unquestionably not the works of Justin. These are: 1. An Exposition of the True Faith; 2. Replies to the Orthodox; 3. Christian Questions to Gentiles; 4. Gentile Questions to Christians; 5. Epistle to Zenas and Serenus; and 6. A Refutation of certain Doctrines of Aristotle. There is no clue to the date of the two last. There can be no doubt that the others were written after the Council of Nicæa, though, immediately after the Reformation, Calvin and others appealed to the first as a genuine writing of Justin’s. There is a curious question connected with the Apologies of Justin which have come down to us. Eusebius mentions two Apologies,—one written in the reign of Antoninus Pius, the other in the reign of Marcus Aurelius. Critics have disputed much whether we have these two Apologies in those now extant. Some have maintained, that what is now called the Second Apology was the preface of the first, and that the second is lost. Others have tried to show, that the so-called Second Apology is the continuation of the first, and that 421 Introductory Note to the Writings of Justin Martyr