Tractates on the Gospel of John

¹¹ Nevertheless, being deceived, they deceive others, and propound fallacies to men. They lay snares to catch men, and that, too, in the open streets. They who spread nets to catch wild beasts even do it in woods and desert places: how miserably vain are men, for catching whom the net is spread in the forum! When men sell themselves to men, they receive money; but these give money in order to sell themselves to vanities. For they go in to an astrologer to buy themselves masters, such as the astrologer is pleased to give them: be it Saturn, Jupiter, Mercury, or any other named profanity. The man went in free, that having given his money he might come out a slave. Nay, rather, had he been free he would not have gone in; but he entered whither his master Error and his mistress Avarice dragged him. Whence also the truth says, “Every one that does sin is the slave of sin.”