St. Optatus of Mileve (+385): The Roman Episcopate is the Universal Principle of Ecclesiastical Unity

I just recently posted a lecture in my class on the Papacy (available at Patreon for The Scholars tier or for a one-time purchase of $5) on St. Optatus of Mileve (+385), a North African Saint of both Catholic and Orthodox veneration. His primary work was a treatise he wrote against a Donatist theologian named Parmenianus (often spelled Parmenian) in an …