Book II.

Augustin, in this latter book, refutes sundry sentences which had been culled by some unknown author from the first of four books that Julianus had published in opposition to the former book of his treatise "On Marriage and Concupiscence;" which sentences had been forwarded to him at the instance of the Count Valerius. He vindicates the Catholic doctrine of original sin from his opponent's cavils and subtleties, and particularly shows how diverse it is from the infamous heresy of the Manicheans.