Only one of these teachers (who, from a reference in the _Stromata_, all appear to have been alive when he wrote[2]) can be with certainty identified, viz. Pantænus, of whom he speaks in terms of profound reverence, and whom he describes as the greatest of them all. Returning to Alexandria, he succeeded his master Pantænus in the catechetical school, probably on the latter departing on his missionary tour to the East, somewhere about A.D. 189.[3] He was also made a presbyter of the church, either then or somewhat later.[4] He continued to teach with great distinction till A.D. 202, when the persecution under Severus compelled him to retire from Alexandria. In the beginning of the reign of Caracalla we find him at Jerusalem, even then a great resort of Christian, and especially clerical, pilgrims. We also hear of him travelling to Antioch, furnished with a letter of recommendation by Alexander bishop of Jerusalem. The close of his career is covered with obscurity. He is supposed to have died about A.D. 220. Among his pupils were his distinguished successor in the Alexandrian school, Origen, Alexander bishop of Jerusalem, and, according to Baronius, Combefisius, and Bull, also Hippolytus. The above is positively the sum of what we know of Clement’s history. His three great works, _The Exhortation to the Heathen_ (λόγος προτρεπτικὸς πρὸς Ἑλληνας), _The Instructor_, or _Pædagogus_ (παιδαγωγός), _The Miscellanies_, or _Stromata_ (Στρωματεȋς), are among the most valuable remains of Christian antiquity, and the largest that belong to that early period. _The Exhortation_, the object of which is to win pagans to the Christian faith, contains a complete and withering exposure of the abominable licentiousness, the gross imposture and sordidness of paganism. With clearness and cogency of argument, great earnestness and eloquence, Clement sets forth in contrast the truth as taught in the inspired Scriptures, the true God, and especially the personal Christ, the living Word of God, the Saviour of men. It is an elaborate and masterly work, rich in felicitous classical allusion and quotation, breathing throughout the spirit of philosophy and of the gospel, and abounding in passages of power and beauty. The _Pædagogus_, or _Instructor_, is addressed to those who have been rescued from the darkness and pollutions of heathenism, and is an exhibition of Christian morals and manners,--a guide for the formation and development of Christian character, and for living a Christian life. It consists of three books. It is the grand aim of the whole work to set before the converts Christ as the only Instructor, and to expound and enforce His precepts. In the first book Clement exhibits the person, the function, the means, methods, and ends of the Instructor, who is the Word and Son of God; and lovingly dwells on His benignity and philanthropy, His wisdom, faithfulness, and righteousness.