24 The books, however, which were the records of his impiety, remained; and both these and his money the widow inherited. And having neither kinsman nor any other friend, she determined to buy with the money a boy named Cubricus: him she adopted and educated as a son in the learning of the Persians, and thus sharpened an evil weapon against mankind. So Cubricus, the vile slave, grew up in the midst of philosophers, and on the death of the widow inherited both the books and the money. Then, lest the name of slavery might be a reproach, instead of Cubricus he called himself Manes, which in the language of the Persians signifies discourse. For as he thought himself something of a disputant, he surnamed himself Manes, as it were an excellent master of discourse. But though he contrived for himself an honourable title according to the language of the Persians, yet the providence of God caused him to become a self-accuser even against his will, that through thinking to honour himself in Persia, he might proclaim himself among the Greeks by name a maniac.
Source: Catechetical Lectures (New Advent)