2 Here we have a man who has reached perfection without a teacher, so as to be a vehicle of the spirit and a self-taught genius. He surpasses Cicero in eloquence, Aristotle in argument, Plato in discretion, Aristarchus in learning, Didymus, that man of brass, in the number of his books; and not only Didymus, but all the writers of his time in his knowledge of the Scriptures. It is reported that you have only to give him a theme and he is always ready— like Carneades — to argue on this side or on that, for justice or against it.
The world escaped a great danger, and civil actions and suits concerning succession were saved from a yawning gulf on the day when, despising the bar, he transferred himself to the Church. For, had he been unwilling, who could ever have been proved innocent? And, if he once began to reckon the points of the case upon his fingers, and to spread his syllogistic nets, what criminal would his pleading have failed to save? Had he but stamped his foot, or fixed his eyes, or knitted his brow, or moved his hand, or twirled his beard, he would at once have thrown dust in the eyes of the jury.
No wonder that such a complete Latinist and so profound a master of eloquence overcomes poor me, who— as I have been some time away (from Rome), and without opportunities for speaking Latin— am half a Greek if not altogether a barbarian. No wonder, I say, that he overcomes me when his eloquence has crushed Jovinian in person. Good Jesus! What! even Jovinian that great and clever man! So clever, indeed, that no one can understand his writings, and that when he sings it is only for himself— and for the muses!
Source: Letters (New Advent)