Arnobius — Against the Nations 2.27
27.1. Therefore if souls also lose all they had known when occupied by bodily bonds, they must necessarily suffer something that makes them put on the blindness of forgetfulness. For neither, having suffered nothing at all or preserving their own integrity, can they lay aside knowledge of things or pass into other habits without changeability of themselves.
2. But we judge that what is one, what is immortal, what is simple, in whatever matter it is, must necessarily always keep its own nature and ought not and cannot suffer anything, if only it thinks to be perpetual and to cling within the bounds of its own immortality. For every passion is a door of death and destruction, a way leading to death and bringing to things an inevitable discharge: which if souls feel and yield to its touch and onsets, life is for them by use, not handed over by ownership—though some infer otherwise and place the faith of so great a matter in their own argumentations.
Latin
27.1. Ergo si et animae perdunt omne quod noverant, corporalibus vinculis occupatae, patiantur necesse est aliquid quod eas efficiat oblivionis induere caecitatem. Neque enim nihil omnino perpessae aut integritatem conservantes suam possunt rerum scientiam ponere aut in alios habitus sine sui mutabilitate transire.
2. Atquin nos arbitramur, quod est unum, quod immortale, quod simplex, quacumque in re fuerit, necessario semper suam retinere naturam nec debere aut posse aliquid perpeti, si modo e sse perpetuum cogitat et in finibus propriae immortalitatis haerere. Omnis enim passio leti atque interitus ianua est, ad mortem ducens via et inevitabilem rebus adferens functionem: quam si sentiunt animae et tactui eius atque incursionibus cedunt, usu et illis est vita, non mancipio tradita, quamvis aliter quidam inferant et rei tantae fidem suis in argumentationibus ponant.