To Florus 3.195
Consequently you have come back to restoring by argument the Manichaean whom you despised in your profession. Saying, ‘If it were evil, it ought not to be saved,’ you assumed the appearance of fighting him. Adding, ‘But if no evil were within it, it would not need to be saved’ (Augustine, Marriage and Sexual Desire 2.36), you showed that you serve him faithfully. It has therefore become clear that your pronouncement contains the same as Mani’s: human nature is evil, since both you and he say evil exists within it. And you have declared that an evil nature ought not to be saved. It has thus been established completely that your faith, with its forces wholly united to his, attacks both nature and grace.
Latin
Ac per hoc eo revolutus es, ut Manichaeum, quem professione contempseras, argumentatione reparares. Nam dicendo: Si mala esset, salvanda non esset speciem pugnandi indueras; subdendo autem: sed si nihil in ea mali esset, salvanda non esset [n250] , ipsi te fideliter militare docuisti. Cum ergo apparuerit hoc tua quod Manichaei sententia contineri, id est malam esse hominum naturam, cui ille et tu pariter inesse malum dicitis, tuque pronuntiaveris malam naturam non esse salvandam, absolutissime confectus est fidem vestram iunctis omnino turmis tam naturam impugnare quam gratiam.