"...O arch-shepherd of the church... save us now... For if they, usurping an authority which does not belong to them, have dared to convene a heretical council, whereas those who follow ancient custom do not even have the right of convening an orthodox one without your knowledge, it seems absolutely necessary, we dare to say to you, that your divine primacy should call together a lawful council, so that the Catholic dogma may drive out heresy and that your primacy may neither be anathematized by these new voices lacking authority... It is in order to obey your divine authority as chief pastor that we have set forth these things as it befitted our nothingness..." - St. Theodore the Studite to Pope Leo III [PG 99: 1017-21]"... O apostolic head, divinely established shepherd of Christ?s sheep, doorkeeper of the heavenly kingdom, rock of the faith on which the Catholic Church has been built. For you are Peter-- you are the successor of Peter, whose throne you grace and direct... To you did Christ our God say, "When you have been converted, strengthen your brethren." Now is the time and the place: help us, you who have been established by God for that purpose..." St. Theodore the Studite to Pope Paschal [PG 99: 1152-3]