Originally Posted by Pope St. Gregory the Great
And, while in the most honourable estate of matrimony allowing to them something of pleasure, he added, But this I say by way of indulgence, not by way of command. Now where indulgence is spoken of, a fault is implied; but one that is the more readily remitted in that it consists, not in doing what is unlawful, but in not keeping what is lawful under control. Which thing Lot expresses well in his own person, when he flies from burning Sodom, and yet, finding Zoar, does not still ascend the mountain heights. For to fly from burning Sodom is to avoid the unlawful fires of the flesh. But the height of the mountains is the purity of the continent. Or, at any rate, they are as it were upon the mountain, who, though cleaving to carnal intercourse, still, beyond the due association for the production of offspring, are not loosely lost in pleasure of the flesh. For to stand on the mountain is to seek nothing in the flesh except the fruit of procreation. To stand on the mountain is not to cleave to the flesh in a fleshly way. But, since there are many who relinquish indeed the sins of the flesh, and yet, when placed in the state of wedlock, do not observe solely the claims of due intercourse, Lot went indeed out of Sodom, but yet did not at once reach the mountain heights; because a damnable life is already relinquished, but still the loftiness of conjugal continence is not thoroughly attained. But there is midway the city of Zoar, to save the weak fugitive; because, to wit, when the married have intercourse with each other even incontinently, they still avoid lapse into sin, and are still saved through mercy.