Edward Gibbon, The Decline and Fall of the Roman Empire XXXIII:
“The youth of Augustin had been stained by the vices and errors which he so ingenuously confesses; but from the moment of his conversion to that of his death, the manners of the bishop of Hippo were pure and austere: and the most conspicuous of his virtues was an ardent zeal against heretics of every denomination; the Manichaeans, the Donatists, and the Pelagians, against whom he waged a perpetual controversy. When the city, some months after his death, was burnt by the Vandals, the library was fortunately saved, which contained his voluminous writings; two hundred and thirty-two separate books or treatises on theological subjects, besides a complete exposition of the psalter and the gospel, and a copious magazine of epistles and homilies. According to the judgment of the most impartial critics, the superficial learning of Augustin was confined to the Latin language; and his style, though sometimes animated by the eloquence of passion, is usually clouded by false and affected rhetoric. But he possessed a strong, capacious, argumentative mind; he boldly sounded the dark abyss of grace, predestination, free will, and original sin; and the rigid system of Christianity which he framed or restored, has been entertained, with public applause, and secret reluctance, by the Latin church.”
