Tertullian

“ Then, again, if souls depart at different ages of human life, how is it that they come back again at one uniform age? For all men are imbued with an infant soul at their birth. But how happens it that a man who dies in old age returns to life as an infant? If the soul, whilst disembodied, decreases thus by retrogression of its age, how much more reasonable would it be, that it should resume its life with a richer progress in all attainments of life after the lapse of a thousand years! ”

“ How can you possibly know, you ask, whether all is not a secret process? may not the work of a thousand years take from you the power of recognition, since they return unknown to you? But I am quite certain that such is not the case, for you yourself present Pythagoras to me as (the restored) Euphorbus. ”

“ Again, if this recovery of life from the dead take place at all, individuals must of course resume their own individuality. Therefore the souls which animated each several body must needs have returned separately to their several bodies. Now, whenever two, or three, or five souls are re-enclosed (as they constantly are) in one womb, it will not amount in such cases to life from the dead, because there is not the separate restitution which individuals ought to have ”