The dogs are those that assault the truth; the swine we may not unsuitably take for those that despise the truth. Therefore because dogs leap forth to rend in pieces, and what they rend, suffer not to continue whole, He said, “Give not that which is holy to the dogs;” because they strive to the utmost of their power to destroy the truth. The swine though they do not assault by biting as dogs, yet do they defile by trampling upon, and therefore He said, “Cast not your pearls before swine.”
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).