We have mentioned apostolic tradition. It is fortunately not requisite for our purpose to discuss the origin of this tradition, much less to decide how much of what the Christian Church eventually taught might be traced to its Founder. That is a point which even the most thorough scholars seem still to decide mainly by their prejudices, perhaps because other material is lacking on which to base a decision. For our present object we may admit the most extreme hypotheses as equally possible. The whole body of Catholic doctrine may have been contained in the oral teaching of Christ; or, on the other hand, a historical Jesus may not have existed at all, or may have been one among many obscure Jewish revolutionists, the one who, by accident, came afterward to be regarded as the initiator of a movement to which all sorts of forces contributed, and with which he had really had nothing to do. In either case the fact remains which alone interests us here; that after three or four centuries of confused struggles, an institution emerged which called itself the Catholic Church. This church, possessed of a recognized hierarchy and a recognized dogma, triumphed, both over the ancient religion, which it called Paganism, and over its many collateral rivals, which it called heresies. Why did it triumph? What was there in its novel dogma and practice that enchained the minds that Paganism could retain no longer, and that would not be content with Neo-Platonism, native, philosophical, and pliable as that system was?