The preceding account of the fathers of the second and third centuries may enable us to form some idea of the value of these writers as ecclesiastical authorities. Most of them had reached maturity before they embraced the faith of the gospel, so that, with a few exceptions, they wanted the advantages of an early Christian education. Some of them, before their conversion, had bestowed much time and attention on the barren speculations of the pagan philosophers; and, after their reception into the bosom of the Church, they still continued to pursue the same unprofitable studies. Cyprian, one of the most eloquent of these fathers, had been baptized only about two years before he was elected bishop of Carthage; and, during his comparatively short episcopate, he was generally in a turmoil of excitement, and had, consequently, little leisure for reading or mental cultivation. Such a writer is not entitled to command confidence as an expositor of the faith once delivered to the saints. Even in our own day, with all the facilities supplied by printing for the rapid accumulation of knowledge, no one would expect much spiritual instruction from an author who would undertake the office of an interpreter of Scripture two years after his conversion from heathenism. The fathers of the second and third centuries were not regarded as safe guides even by their Christian contemporaries. Tatian was the founder of a sect of extreme Teetotallers. [383:1] Tertullian, who, in point of learning, vigour, and genius, stands at the head of the Latin writers of this period, was connected with a party of gloomy fanatics. Origen, the most voluminous and erudite of the Greek fathers, was excommunicated as a heretic. If we estimate these authors, as they were appreciated by the early Church of Rome, we must pronounce their writings of little value. Tertullian, as a Montanist, was under the ban of the Roman bishop. Hippolytus could not have been a favourite with either Zephyrinus or Callistus, for he denounced both as heretics. Origen was treated by the Roman Church as a man under sentence of excommunication. Stephen deemed even Cyprian unworthy of his ecclesiastical fellowship, because the Carthaginian prelate maintained the propriety of rebaptizing heretics.