>>24520032He is not proposing a framework arbitrarily. He's trying to SHOW you, to POINT OUT to you (apo-deixis), in the form of logically consequent logoi (propositions, perspicuous statements-about), what necessarily or at least reasonably in an earnest inquiry into the that-which-animates-animated-things. It's not a big baroque mess for the sake of a big baroque mess. He's trying to reconcile empirical observations, which have "brute facticity" and broad pre-scientific agreement, with logical necessity. For example, it is a brute fact that plants do something dead matter does not: they grow, regularly. Another brute fact about them: when their growth is "interrupted" or queered in some way, they "tend" to "right" it or "compensate for" it. They have some "animating" drive, something that makes them do things that inanimate matter (which they take up into themselves and which their animating principle, as it were, "instrumentalizes") does not do on its own. But then we have another brute fact: animals ALSO have this principle, they do what plants do, so it stands to reason (so Aristotle claims, at least) that animals have the "plant soul" AND something else, another soul. And so on for humans: we do what plants do, we do what animals do, but we also reason abstractly. So it stands to reason that we have a third level of soul.
This is not the same as the Christian and (likely) Platonic notion of an individual soul. This is a sober analysis and hierarchical typology of animated things qua animated things. This is why Aristotle is perfectively tentative and exploratory about things that exceed the limits of empirical observation and lays out various possibilities, although he ultimately goes with what seems likeliest to him: humans (and certainly animals), being sufficiently (albeit hypothetically) explained as a concatenation of soul-levels, do not "need" an additional, unobservable immortal and personal spirit to explain their empirically observed activity (living, growing, moving, self-sustaining, behaving according to type, ultimately perishing). Thus Aristotle is generally thought not to have a doctrine of a soul in the modern sense, something that caused problems for Christian and Islamic Aristotelians.
The most interesting part is how Aristotle reconciles the highest level of ensouled beings' activity, reasoning, with the existence of "reason itself" as the top of the world-hierarchy. A kind of macrocosm/microcosm (the world as one big thinking, living thing) is tantalizingly implicit. When we philosophize (engage in serene theoria, contemplation), we mirror the world itself in its perfection, our house (body) is in order and its crown jewel shines in perfect conformity with the world itself. Not quite nondualism but as I said tantalizingly implicit.