23 Men, though prone to lust, and inclined, through weakness of character, to yield to the allurements of sensual pleasures, still punish adultery by the laws, and visit with the penalty of death those whom they find to have possessed themselves of others rights by forcing the marriage-bed. The greatest of kings, however, you tell us, did not know how vile, how infamous the person of the seducer and adulterer was; and he who, as is said, examines our merits and demerits, did not, owing to the reasonings of his abandoned heart, see what was the fitting course for him to resolve on. But this misconduct might perhaps be endured, if you were to conjoin him with persons at least his equals, and if he were made by you the paramour of the immortal goddesses. But what beauty, what grace was there, I ask you, in human bodies, which could move, which could turn to it the eyes of Jupiter? Skin, entrails, phlegm, and all that filthy mass placed under the coverings of the intestines, which not Lynceus only with his searching gaze can shudder at, but any other also can be made to turn from even by merely thinking.
Source: Against the Heathen (New Advent)