Simplicius

Pope Simplicius (c. 420–483) was bishop of Rome from 468 to 483, a period that saw the final collapse of the Western Roman Empire in 476 and the beginning of the Acacian Schism with Constantinople. His pontificate was defined by two challenges: managing the church in a Rome now governed by barbarian kings, and responding to the emperor Zeno's Henotikon — a theological compromise document designed to paper over the divisions caused by the Council of Chalcedon. His surviving letters — 31 in this collection — document a pope trying to hold the line on Chalcedonian orthodoxy while the political ground shifted beneath him. He wrote to Eastern bishops and patriarchs, protesting the elevation of theologians he considered compromised and defending the authority of Chalcedon against imperial attempts at doctrinal compromise. Simplicius's letters matter because they capture the papacy at its most vulnerable — the Western empire gone, the Eastern empire asserting theological control, and the bishop of Rome dependent on his moral authority alone. His voice is firm but anxious, that of a man who understood that the church's independence depended on not bending.