3. It might have been well if the Christian Church had been content to rest with this first stage in the transformation of the idea of belief, and to take as its intellectual basis only the simple statements of the primitive creed interpreted by the New Testament. But the conflict of speculations which had compelled the middle party in the Christian churches to adopt a standard of belief and a limitation of the sources from which the belief might be interpreted, had also had the effect of bringing into the Church the philosophical temper.[692] In the creed of the end of the second century, the age of Tertullian, there are already philosophical ideas—the creation of the world out of nothing, the Word, the relation of the Creator to the world, of the Word or Son to the Father, and of both to men. The Creed, as given in the treatise against Praxeas, is equally elaborate.[693] With that Creed—traditional as he believed it to be—Tertullian himself was satisfied. He deprecates the “curiositas” of the brethren no less than the “scrupulositas” of the heretics. He denies the applicability of the text, “Seek and ye shall find,” to research into the content of Christian doctrine: it relates only to the traditional teaching: when a man has found that, he has all that he needs: further “seeking” is incompatible with having found. In other words, as among modern Ultramontanes, faith must rest not on search but on tradition (authority).[694] The absolute freedom of speculation was checked, but the tendency to speculate remained, and it had in the “rule of faith” a vantage-ground within the Church. There grew up within the lines that had been marked out a tendency which, accepting the rule of faith, and accepting also, with possibly slight variations, the canonical Scriptures, tried to build theories out of them: γνῶσις took its place side by side with πίστις.[695] It grew up in several parts of Christendom. In Cappadocia, in Asia, in Edessa, in Palestine, in Alexandria, were different small groups of men who within the recognized lines were working out philosophical theories of Christianity.[696] We know most about Alexandria. There was a recognized school—on the type of the existing philosophical schools—for the study of philosophical Christianity. Its first great teacher was Clement. He was the first to construct a large philosophy of Christian doctrine, with a recognition of the conventional limits, but by the help and in the domain of Greek thought. But he is of less importance than his great disciple Origen. In the _De Principiis_ of the latter we have the first complete system of dogma; and I recommend the study of it, of its omissions as well as of its assertions, of the strange fact that the features of it which are in strongest contrast to later dogmatics are in fact its most archaic and conservative elements. * * * * *