De Virtutibus

And if they are not taken to be offered in sacrifice, but with a view to feast on them, then who can there be who would not loathe and reject all these new and unprecedented kinds of preposterous gluttony? for such men are, indeed, pursuing pleasures which are out of all reason. And what pleasure can it be to men who are eating meat, to devour, on the same occasion, the flesh of the mothers and of their offspring? And if any one were to desire to mangle the limbs of the two animals together, and to run them in a spit and to roast them, and so to devour them, I do believe that the very limbs themselves would not remain quiet, but would be filled with indignation and would utter speech, through their fury at the extraordinary character if the unprecedented injury done to them, and would revile, with innumerable reproaches for their gluttony, those men who had thus prepared this unmentionable banquet.

But the law banishes to a distance from the sacred precincts all animals which are pregnant, not permitting them to be sacrificed until they have brought forth, looking on the [*]( The Greek is σφάγια, not θυσία. )

for if animals, which grow and increase like plants, and which are considered to be as it were parts of the mothers which have conceived them, being still united to them, and being destined hereafter, after an appointed period of months, to be separated from the close connection to which they are at present attached, are, because of the hope that at some future time they may become living creatures, preserved at present by the safety thus guaranteed to their mothers, in order that the aforesaid pollution may not come to pass; how can it be that the animals, when brought forth, shall not be preserved in a still greater degree, which in their own proper persons have received the gift of life and body? for it is the most impious of all customs, to slay both offspring and mother at one time and on one day.