JonNC:
And whose to say St Augustine today would not view you as the schismatic?
“Rome has spoken; the case is closed.” - Saint Augustine (Sermon 131:10)
Here is what your Anglican friend J.N.D Kelly has to say:
“According to him [St. Augustine ], the Church is the realm of Christ, His mystical body and His bride, the mother of Christians [Ep 34:3; Serm 22:9]. There is no salvation apart from it; schismatics can have the faith and sacraments…but cannot put them to a profitable use since the Holy Spirit is only bestowed in the Church [De bapt 4:24; 7:87; Serm ad Caes 6]…It goes without saying that Augustine identifies the Church with the universal Catholic Church of his day, with its hierarchy and sacraments, and with its centre at Rome …By the middle of the fifth century the Roman church had established,
de jure as well as
de facto , a position of primacy in the West, and the papal claims to supremacy over all bishops of Christendom had been formulated in precise terms …The student tracing the history of the times, particularly of the Arian, Donatist, Pelagian and Christological controversies, cannot fail to be impressed by the skill and persistence with which the Holy See [of Rome] was continually advancing and consolidating its claims. Since its occupant was accepted as the successor of St. Peter, and prince of the apostles, it was easy to draw the inference that the unique authority which Rome in fact enjoyed, and which the popes saw concentrated in their persons and their office, was no more than the fulfilment of the divine plan .” (
Kelly , page 412, 413, 417)