Matter and Form in Aristotle

The living thing as it is present to my looking seems to be richer, fuller, more interesting than it can possibly be when it is reduced to a definition in speech, but this is a confusion. All that belongs to the living thing that is not implied by the definition of its species belongs to it externally, as a result of its accidental interactions with the other things in its environment. The definition attempts to penetrate to what it is in itself, by its own activity of making itself be whole and persist. There is nothing fuller than the whole, nothing richer than the life which is the winning and expressing of that wholeness, nothing more interesting than the struggle it is always waging unnoticed, a whole world of priority deeper and more serious than the personal history it must drag along with the species-drama it is constantly enacting. The reduction of the living thing to what defines it is like the reduction of a rectangular block of marble to the form of Hermes: less is more. Strip away the accretion of mere facts, and what is left is that without which even those facts could not have gained admittance into the world: the forever vulnerable foundation of all that is in the world, the shaping, ruling form, the incessant maintenance of which is the only meaning of the phrase self-preservation. Indeed even the bodily material of the living thing is present in the world only as active, only as forming itself into none of the other things it might have been but just this one thoroughly defined animal or plant. And this, finally, is Aristotle's answer to the question, What is form? Form is material at work according to a persisting definiteness of kind. Aristotle's definition of the soul in De Anima, soul is the being-at-work-staying-the-same of an organized body, becomes the definition of form in Book 8 of the Metaphysics, and is, at that stage of the inquiry, his definition of being.

Book 9 spells out the consequences of this clarification of form. Form cannot be derivative from or equivalent with material, because material on its own must be mere possibility. It cannot enter the world until it has achieved definiteness by getting to work in some way, and it cannot even be thought except as the possibility of some form. Books 7-9 demonstrate that materiality is a subordinate way of being. The living body does not bring form into the world, it must receive form to come into the world. Form is primary and casual, and the original source of all being in the sensible world must be traced beyond the sensible world, to that which confers unity on forms themselves. If forms had no integrity of their own, the world and things could not hang together and nothing would be. At the end of Book 9, the question of being has become the question of formal unity, the question, What makes each form one? In the woven texture of the organization of the Metaphysics, what comes next, at the beginning of Book 10, is a laying out of all the ways things may be one. Glue, nails, and rope are of no use for the problem at hand, nor, any longer, are natural shapes and motions, which have been shown to have a derivative sort of unity. All that is left in Aristotle's array of possibilities is the unity of that of which the thinking or the knowing is one.

This thread of the investigation, which we may call for convenience the biological one, converges in Book 12 with a cosmological one. The animal and plant species take care of their own perpetuation by way of generation, but what the parents pass on to the offspring is an identity which must hold together thanks to a timeless activity of thinking. The cosmos holds together in a different way: it seems to be literally and directly eternal by way of a ceaseless repetition of patterns of locomotion. An eternal motion cannot result from some other motion, but must have an eternal, unchanging cause. Again, Aristotle lays out all the possibilities. What can cause a motion without undergoing a motion? A thing desired can, and so can a thing thought. Can you think of a third? Aristotle says that there are only these two, and that, moreover, the first reduces to the second. When I desire an apple it is the fleshy apple and not the thought of it toward which I move, but it is the thought or imagining of the fleshy apple that moves me toward the apple. The desired object causes motion only as an object of thought. Just as the only candidate left to be the source of unity of form among the animals and plants was the activity of thinking, so again the only possible unmoved source for the endless circlings of the stars is an eternal activity of thinking. Because it is deathless and because the heavens and nature and all that is depend upon it, Aristotle calls this activity God. Because it is always altogether at work, nothing that is thought by it is ever outside or apart from it: it is of thinking, simply. Again, because it is always altogether at work, nothing of it is ever left over outside of or apart from its work of thinking: it is thinking, simply. It is the pure holding-together of the pure holdable-together, activity active, causality caused. The world is, in all its being most deeply, and in its deepest being wholly, intelligible. So far is Aristotle from simply assuming the intelligibility of things, that he requires twelve books of argument to account for it. All being is dependent on the being of things; among things, the artificial are derived from the natural; because there is a cosmos, all natural things have being as living things; because all living things depend on either a species-identity or an eternal locomotion, there must be a self-subsisting activity of thinking.

The fact that there are a Book 13 and a Book 14 to the Metaphysics indicates that, in Aristotle's view, the question of being has not yet undergone its last transformation. With the completion of Book 12, the question of being becomes: What is the definition of the world? What is the primary intelligible structure that implies all that is permanent in the world? Books 13 and 14 of the Metaphysics examine the only two answers that anyone has ever proposed to that question outside of myths. They are: that the divine thinking is a direct thinking of all the animal and plant species, and that it is a thinking of the mathematical sources of things. The conclusions of these two books are entirely negative. The inquiry into being itself cannot come to rest by transferring to the divine source the species-identities which constitute the world, nor can they be derived from their mathematical aspects. Aristotle's final transformation of the question of being is into a question. Books 13 and 14 are for the sake of rescuing the question as one which does not and cannot yield to a solution but insists on being faced and thought directly. Repeatedly, through the Metaphysics, Aristotle says that the deepest things must be simple. One cannot speak the truth about them, nor even ask, a question about them, because they have no parts. They have no articulation in speech, but only contact with that which thinks. The ultimate question of the Metaphysics, which is at once What is all being at its roots? and What is the life of God?, and toward which the whole Metaphysics has been designed to clear the way, takes one beyond the limits of speech itself. The argument of the Metaphysics begins from our direct encounter with the sensible world, absorbs that world completely into speech, and carries its speech to the threshold of that on which world and speech depend. The shape of the book is a zig-zag, repeatedly encountering the inexpressible simple things and veering away. By climbing to that life which is the being-at-work of thinking, and then ending with a demonstration of what that life is not, Aristotle leaves us to disclose that life to ourselves in the only way possible, in the privacy of lived thinking. The Metaphysics is not an incomplete work: it is the utmost gift that a master of words can give.

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