L. An ancient said that the embryo is a living thing; for that the soul entering into the womb after it has been by cleansing prepared for conception, and introduced by one of the angels who preside over generation, and who knows the time for conception, moves the woman to intercourse; and that, on the seed being deposited, the spirit, which is in the seed, is, so to speak, appropriated, and is thus assumed into conjunction in the process of formation. He cited as a proof to all, how, when the angels give glad tidings to the barren, they introduce souls before conception. And in the Gospel “the babe leapt” as a living thing. And the barren are barren for this reason, that the soul, which unites for the deposit of the seed, is not introduced so as to secure conception and generation.