We conclude that Matter’s participation in Idea is not by way of modification within itself: the process is very different; it is a bare seeming. Perhaps we have here the solution of the difficulty as to how Matter, essentially evil, can be reaching towards The Good: there would be no such participation as would destroy its essential nature. Given this mode of pseudo-participation — in which Matter would, as we say, retain its nature, unchanged, always being what it has essentially been — there is no longer any reason to wonder as to how while essentially evil, it yet participates in Idea: for, by this mode, it does not abandon its own character: participation is the law, but it participates only just so far as its essence allows. Under a mode of participation which allows it to remain on its own footing, its essential nature stands none the less, whatsoever the Idea, within that limit, may communicate to it: it is by no means the less evil for remaining immutably in its own order. If it had authentic participation in The Good and were veritably changed, it would not be essentially evil.
In a word, when we call Matter evil we are right only if we mean that it is not amenable to modification by The Good; but that means simply that it is subject to no modification whatever.