If it is considered unseemly to emend anything which Plato has touched, why did Porphyry himself make emendations, and these not a few? for it is very certain that Plato wrote that the souls of men return after death to the bodies of beasts. Plotinus also, Porphyry's teacher, held this opinion; yet Porphyry justly rejected it. He was of opinion that human souls return indeed into human bodies, but not into the bodies they had left, but other new bodies. He shrank from the other opinion, lest a woman who had returned into a mule might possibly carry her own son on her back. He did not shrink, however, from a theory which admitted the possibility of a mother coming back into a girl and marrying her own son. How much more honourable a creed is that which was taught by the holy and truthful angels, uttered by the prophets who were moved by God's Spirit, preached by Him who was foretold as the coming Saviour by His forerunning heralds, and by the apostles whom He sent forth, and who filled the whole world with the gospel,—how much more honourable, I say, is the belief that souls return once for all to their own bodies, than that they return again and again to divers bodies? Nevertheless Porphyry, as I have said, did considerably improve upon this opinion, in so far, at least, as he maintained that human souls could transmigrate only into human bodies, and made no scruple about demolishing the bestial prisons into which Plato had wished to cast them. He says, too, that God put the soul into the world that it might recognise the evils of matter, and return to the Father, and be for ever emancipated from the polluting contact of matter. And although here is some inappropriate thinking (for the soul is rather given to the body that it may do good; for it would not learn evil unless it did it), yet he corrects the opinion of other Platonists, and that on a point of no small importance, inasmuch as he avows that the soul, which is purged from all evil and received to the Father's presence, shall never again suffer the ills of this life. By this opinion he quite subverted the favourite Platonic dogma, that as dead men are made out of living ones, so living men are made out of dead ones; and he exploded the idea which Virgil seems to have adopted from Plato, that the purified souls which have been sent into the Elysian fields (the poetic name for the joys of the blessed) are summoned to the river Lethe, that is, to the oblivion of the past,