To Florus 1.116

Believing human beings evil by the condition of birth, the Manichaean assigned them an author through whom the blame for the evil work could be kept away from the good God. Since he had erred in the definition of sin, thinking natural something that can only be voluntary, he consistently went on to invent an evil maker for an evil origin. In this he was more reverent toward God and more defiant toward nature. You, however, say that people are born evil, but that God is the author of the evil: you are more defiant toward God and more respectful toward nature. For nature is defended by its author's majesty, while its author is accused by the ugliness of his work.