30 Your scoff is very inappropriate, when you say that Moses discusses like a glutton what should be eaten, and commands some things to be freely used as clean, and other things as unclean to be not even touched. A glutton makes no distinction, except in choosing the sweetest food. Perhaps you wish to commend to the admiration of the uninitiated the innocence of your abstemious habits, by appearing not to know, or to have forgotten, that swine's flesh tastes better than mutton. But as this too was written by Moses of Christ in figurative prophecy, in which the flesh of animals signifies those who are to be united to the body of Christ, which is the Church, or who are to be cast out, you are typified by the unclean animals; for your disagreement with the Catholic faith shows that you do not ruminate on the word of wisdom, and that you do not divide the hoof, in the sense of making a correct distinction between the Old Testament and the New. But you show still more audacity in adopting the erroneous opinions of your Adimantus.
Source: Reply to Faustus the Manichaean (New Advent)