With good reason He forbade pearls to be given to swine. For if they are not to be set before swine that are the less unclean, how much more are they to be withhold from dogs that are so much more unclean. But respecting the giving that which is holy, we cannot hold the same opinion; seeing we often give the benediction to Christians who live as the brutes; and that not because they deserve to receive it, but lest perchance being more grievously offended they should perish utterly.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).