formulated, then the men we have just mentioned were the first to set up dogmas[8]--dogmas but no system of dogmatics. As yet the difficulty of the problem was by no means perceived by these men either. Their peculiar capacity for sympathising with and understanding the traditional and the old still left them in a happy blindness. So far as they had a theology they supposed it to be nothing more than the explanation of the faith of the Christian multitude (yet Tertullian already noted the difference in one point, certainly a very characteristic one, viz., the Logos doctrine). They still lived in the belief that the Christianity which filled their minds required no scientific remodelling in order to be an expression of the highest knowledge, and that it was in all respects identical with the Christianity which even the most uncultivated could grasp. That this was an illusion is proved by many considerations, but most convincingly by the fact that Tertullian and Hippolytus had the main share in introducing into the doctrine of faith a philosophically formulated dogma, viz., that the Son of God is the Logos, and in having it made the _articulus constitutivus ecclesiae_. The effects of this undertaking can never be too highly estimated, for the Logos doctrine is Greek philosophy _in nuce_, though primitive Christian views may have been subsequently incorporated with it. Its introduction into the creed of Christendom, which was, strictly speaking, the setting up _of the first dogma in the Church_, meant the future conversion of the rule of faith into a philosophic system. But in yet another respect Irenaeus and Hippolytus denote an immense advance beyond the Apologists, which, paradoxically enough, results both from the progress of Christian Hellenism and from a deeper study of the Pauline theology, that is, emanates from the controversy with Gnosticism. In them a religious and realistic idea takes the place of the moralism of the Apologists, namely, the deifying of the human race through the incarnation of the Son of God. The apotheosis of mortal man through his acquisition of immortality (divine life) is the idea of salvation which was taught in the ancient mysteries. It is here adopted as a Christian one, supported by the Pauline theology (especially as contained in the Epistle to the Ephesians), and brought into the closest connection with the historical Christ, the Son of God and Son of man (filius dei et filius hominis). What the heathen faintly hoped for as a possibility was here announced as certain, and indeed as having already taken place. What a message! This conception was to become the central Christian idea of the future. A long time, however, elapsed before it made its way into the dogmatic system of the Church.[9]