19. Fifthly, The only imaginable help in this case would be, that, having framed perfect complex ideas of the properties of things flowing from their different real essences, we should thereby distinguish them into species.
19. Bosgarrenik, auzi hau argi uzten lagunduko ligukeen gauza bakarra hauxe litzateke, alegia, guk gauzen esentzia errealei darizkien propietateen ideia konplexu oso-osoak eratu ondoren, berauen bidez espezieka bereiztea.