When Julian addressed his two letters to Zosimus he was preparing a reply to the first of Augustine's two books de Nuptiis et Concupiscentia,[REF] which he addressed to a fellow-recusant named Turbantius, whose prayers he earnestly asks that the church may be delivered from the defilement of Manicheism [REF].
When driven from the West, Julian and some of his fellow-exiles went into Cilicia and remained for a time with Theodorus, bishop of Mopsuestia,[REF] who is charged by Mercator with having been one of the originators of Pelagianism[REF] and who wrote against Augustine [REF].