To guarantee the authenticity of the Tradition against innovation, the Ratzinger understanding of his office - this is dead in line with the Anglican Catholic patristic approach. Dom Gregory Dix can stand as an example:
"It is above all as the norm of Christian belief that Rome is the capital of Christendom in [the second century]. It is at Rome and only at Rome, that all doctrinal issues are then finally settled. This is clearly recognised by the non-Roman writers of the second century, from Ignatius of Antioch at its beginning to Tertullian at its close. The former can write to the Roman Church: 'Ye were the instructors of others. And my desire is that those lessons shall hold good which as teachers ye enjoin'. For the latter the Roman Church is the ecclesia authenticae regulae. To Rome comes every second century Christian teacher, intent on securing the approval of that Church for his teachings. To Rome comes Marcion, already under censure in other Churches; but until Rome has condemned him he is still a catholic Christian. It is at Rome that the controversies with the great Gnostic heresiarchs, which fill the latter half of the second century, were primarily thrashed out. It is at Rome that the answer to their claim to a secret tradition and a succession of teachers from the Apostles is elaborated; it is at Rome that the additions to the baptismal symbol which exclude their interpretations of the Gospel are first made; it is at Rome that the incompatibility of their Hellenistic presuppositions with the concrete thought of authentic Christianity is made plain, in a way that it was not plain even to great Churches like that of Alexandria for half a century afterwards. Above all, in the controversy over Montanus, about which we know more than any other in this period, Rome is obviously the centre and focus of the final issue, even though Montanus never left Asia and the Apostolic Churches of Asia were his chief opponents. It is at Rome that the Montanists, excommunicated in Asia, repeatedly seek the communion of the Church; at Rome that Praxeas intercedes against them; at Rome that the Church of Lyons seeks to mediate between them and their opponents; Tertullian the Montanist reserves his wrath, not for the Asian bishops who had excommunicated and sought to exorcise the new Prophets of the Paraclete, but for the Roman bishop whose refusal of communion had finally cut them off from the Church."