69 On the Morals of the Manichæans. [De Moribus Manichæorum.] a.d. 388. Containing a particular refutation of the doctrine of these heretics regarding the origin and nature of evil; an exposure of their pretended symbolical customs of the mouth, of the hands, and of the breast; and a condemnation of their superstitious abstinence and unholy mysteries.  Lastly, some crimes brought to light among the Manichæans are mentioned. Argument. 113 Argument.