Miscellanies 3.14.95

So the same Lord was judging then too the desire that anticipated marriage. When, then, the apostle says, “Put on the new man, created according to God,” he says it to us who were formed by the will of the Almighty as we were formed; and he speaks of old and new not with regard to birth and rebirth, but with regard to the life of disobedience and the life of obedience. Cassianus thinks the “garments of skin” are bodies; we will show later that he and those who teach as he does are in error about these, when we undertake the explanation of man's origin, following what must be said first. Further, he says: “Those ruled by earthly things both beget and are begotten, ‘but our citizenship is in heaven, from which we also await a Savior.’” We too know that this is well said, since we ought to live as strangers and sojourners: those who marry as though not marrying, those who acquire as though not acquiring, those who beget children as begetting mortals, as those who will leave their possessions, as those who will live even without a wife if need be, not using creation with passion, but with all thanksgiving and magnanimity.