To Florus 5.6
Since we have demonstrated this with the ability truth supplied, the discerning reader should have no further doubt about it. Wherever this appears in the writings of the advocate of inherited sin—who nevertheless cannot open his mouth without it—let it neither disturb listeners nor do anything except testify to its author’s shame. We will henceforth touch on it, if the matter compels us, with the brevity required. He attacks my statement: ‘This union of bodies, created by God with its heat, pleasure, and seed, is shown to be praiseworthy according to its own measure’ (Augustine, Marriage and Desire 2.25). But he passed over what I added: ‘Concerning something instituted by nature which sometimes also becomes a generous gift to the devout, even the devil does not dare to claim anything for himself with your effrontery.’