Manichaean friends introduced him to the prefect of the City of Rome, Symmachus, who while traveling through Carthage had been asked by the imperial court at Milan to provide a rhetoric professor.
Augustine won the job and headed north to take his position in Milan in late 384.
By the time he realized that he needed to know Greek, it was too late; and although he acquired a smattering of the language, he was never eloquent with it. He became an expert both in the eloquent use of the language and in the use of clever arguments to make his points.
Disturbed by unruly students in Carthage, he moved to establish a school in Rome, where he believed the best and brightest rhetoricians practiced, in 383.
Among his most important works are The City of God, On Christian Doctrine and Confessions.