Since the topic of Aristotle has come up, I will quote selectively from a
post of mine in another thread.
First, there is the passage from Timaeus that is being considered:
Clearly we should now begin again, once we have called upon the god, our saviour, at the very outset of our deliberations to see us safely out of an unusual and unaccustomed exposition, to the doctrine of things probable. In any case, our fresh start concerning the universe should be more elaborate than before, for we distinguished two entities then, but now we must present a third factor. Two were sufficient for our previous descriptions, one designated as a sort of a model discernible by Nous and ever the same, while the second was a copy of the model involved in becoming and visible. We did not distinguish a third entity at the time as we thought it enough to have these two, but now the argument seems to compel us to try to manifest a difficult and obscure form in words. What should we understand its capacity and nature to be? This in particular: it is the receptacle of all coming into being, like its nurse. Now although the truth has been spoken, a clearer statement about it is still required but it is difficult to do so, particularly because it is necessary for the sake of this to raise a preliminary problem about fire and its accompaniments. It is difficult in the case of each of these to state what sort should actually be called water rather than fire, and what sort should be referred to as anything in particular rather than as everything individually, in such a manner as to employ language which is trustworthy and certain. How then, may we speak about them in a likely manner and in what way, and what can we say about them when faced with this problem? — Plato, Timaeus, 48e, translated by Horan
The difficulty described by Timaeus is that the language of correspondence does not serve us as readily as it did in the other two models. The other difficulty is that third entity is prior to the other entities as a fundamental ground of natural being. The new beginning is in that sense a second sailing as taken in the Phaedo (to which Fooloso4 often refers to).
A scholar who takes that perspective seriously is John Sallis. He takes issue with Aristotle's interpretation of Plato's passage:
For, according to Aristotle, this is what Plato declared the receptacle to be: “a substratum [ύποκείμενον] prior to the so-called elements, just as gold is the substratum of works made of gold.” Though in this context Aristotle refers to one other image of the χώρα, that of nurse (τιθήνη), he forgoes drawing on the content of that image and, instead, moves immediately to identify the receptacle with “primary matter” (329a). Yet the passage that is, at once, both most decisive and most puzzling occurs in Book 4 of the Physics: “This is why Plato says in the Timaeus that matter and the χώρα are the same; for the receptive and the χώρα are one and the same. Although the manner in which he speaks about the receptive in the Timaeus differs from that in the so-called unwritten teachings, nevertheless he declares that place [τόπος] and the χώρα are the same” (209b).
One cannot but be struck by the lack of correspondence between this passage and the text of the Timaeus. The passage declares three identifications: that of the receptive (μεταληπτικόν) with the χώρα, that of matter (ύλη) with the χώρα, and that of place (τόπος) with the χώρα. Only the first of these identifications has any basis in the text of the Timaeus, and then only if one disregards any difference that might distinguish μεταληπτικόν from the Platonic words δεχόμενον and ύποδοχή.
For the identification of ύλη with the χώρα, there is no basis in the Timaeus. Plato never uses the word ύλη in Aristotle’s sense, a sense that, one suspects, comes to be constituted and delimited only in and through the work of Aristotle. When Plato does, on a few occasions, use the word, it has the common, everyday sense of building material such as wood, earth, or stone. Following Aristotle’s own strategy in On Generation and Corruption, one could refer to the image of the constantly remodeled gold as providing support for the identification. But reference to this image could be decisive only if one privileged it over most of the others, disregarding, for instance, the image of the nurse, which represents the relation between the χώρα and the sensible in a way quite irreducible to that between matter and the things formed from it. What is perhaps even more decisive is that all these are images of the χώρα, images declared in an είκώς λόγος (likely account}, which is to be distinguished from the bastardly discourse in which one would venture to say the χώρα. — John Sallis, Chorology: On Beginning in Plato's Timaeus
What makes the passage from
Physics even more convoluted is that Aristotle is not actually agreeing with the view he ascribes to Plato regarding whether 'place' belongs to a being as its form and matter do:
We have seen that attributions are made directly, in virtue of their immediate applicability, or mediately, because, though not immediately applicable themselves, they include, involve, or imply something that is immediately applicable. And so, too, a ‘place’ may be assigned to an object either primarily because it is its special and exclusive place, or mediately because it is ‘common’ to it and other things, or is the universal place that includes the proper places of all things.
I mean, for instance, that you, at this moment, are in the universe because you are in the air, which air is in the universe; and in the air because on the earth; and in like manner on the earth because on the special place which ‘contains and circumscribes you, and no other body.
But if what we mean by the ‘place’ of a body is its immediate envelope, then ‘place’ is a limiting determinant, which suggests that it is the specifying or moulding ‘form’ by which the concrete quantum, together with its component matter, is ‘determined.’ For it is just the office of a limit so to determine or mould something. From this point of view, then, we should identify ‘place’ with ‘form.
But if we think of a thing’s place as its ‘dimensionality’ or ‘room-occupancy’ (to be distinguished from the thing itself, as a concrete quantum) we must then regard it as ‘matter’ rather than as ‘form,’ for matter is the factor that is bounded and determined by the form, as a surface, or other limit, moulds and determines; for it is just that which is in itself undetermined, but capable of being determined, that we mean by matter. Thus, if a concrete sphere, e.g., be stripped of its limit, as well as of its other determining characteristics, nothing but its matter is left.
This is why Plato, in the Timaeus, identifies, a ‘matter’ and ‘room,’ because ‘room’ and ‘the receptive-of-determination’ are one and the same thing. His account of the ‘receptive’ differs in the Timaeus and in what are known as his Unwritten Teachings, but he is consistent in asserting the identity of ‘place’ (τόπον) and ‘room.’(χώραν) Thus, whereas everyone asserts the reality of ‘place,’ only Plato has so much as attempted to tell us what it is.
It is no wonder that, when thus regarded,—either as matter or as form, I mean,—‘place’ should seem hard to grasp, especially as matter and form themselves stand at the very apex of speculative thought, and cannot well, either of them, be cognized as existing apart from the other.
But in truth it is easy enough to see that its place cannot possibly be either the matter or the form of a thing; for neither of these is separable from the thing itself, as its place undoubtedly is. For we have already explained that ‘where’ the air was ‘there’, again the water is, when the water and air succeed each other, and so too with any other substance; and therefore its ‘place’ can be neither a factor nor an intrinsic possession of the thing, but is something separable from it. — Aristotle, Physics, 209a, translated by Wicksteed and Cornford