Part one of this program features the sacking of Rome and introduces Augustine of Hippo and his The City of God, which examines the Church’s uneasy relationship with human frailty and worldliness, as piety became identified with self-denial and celibacy was viewed as central to the pursuit of perfection. Part two tracks the spread of Christianity to Ireland and its establishment in Britain and northern Europe by Celtic monks, who had formulated the concept of penance and the culture of pilgrimage. However, it was not the Christianity of Saint Patrick, but of Rome, that succeeded in dominating Britain. (48 minutes)