Potentiality and Possibility

“At the conclusion of Theta 3, we had recognized in dunamis at the same time the condition of becoming and a mode of being, and in energeia the mode of being that is opposed to it and which characterizes, beyond movement, all that which is effective. In defining what is in-potentiality as that which is not in-act, we have also distinguished it from non-being, in characterizing it as that which can be in act. Now we need to pursue the examination of what is in play in this division, or the modality of the relation of the in-potentiality to act” (Aubry, Dieu san la puissance, 2nd ed., ch. 4, p. 124, my translation throughout, with Becker number citations to Aristotle’s Greek text elided).

“The discussion of Theta 4 concerns neither dunamis nor what is dunamei, but rather the dunaton. This term nonetheless can designate both the possible and that which has power, or the capable, just as much as adunaton can designate the impossible as well as that which lacks power. In Theta 3, the dunaton had been defined in terms of dunamis as ‘that for which nothing makes it impossible for the act (energeia) to exist, when it is said to have power (dynamis)'” (ibid).

Clearly, dynamis, dynamei, and dynaton all have related etymologies. My Greek isn’t strong enough to just casually read Aristotle’s original the way I can mostly read Aubry’s French without a dictionary, so this is a bit of an eye-opener. This is why Aristotle’s discussions of what we render by English words that have different etymologies are so closely related.

Because the English words do not have this visible relation to one another, it is easy to be confused by the ways in which Aristotle relates the corresponding Greek terms. For years, I have been puzzled by English translators’ seemingly random alternations between respective uses of power, potentiality, and possibility for what was supposed to be the “same” concept in Aristotle. Aubry’s highlighting of the Greek words tells me I should have long ago studied this more carefully with the side-by-side Greek and English texts in the Loeb edition. The translators’ alternations are probably not random at all, just not commented upon. We are not dealing here with things confusingly said of one same concept, but rather with things more clearly said about each of several related concepts. This is just the kind of disambiguation that Aristotle himself pioneered.

“Book Delta defines [the possible] differently, as that of which the contrary is not necessarily false; that which is true; that which can be true. Thus characterized without relation to dunamis, dunaton no longer means having power, but possible. Delta opposes it to the impossible, adunaton, defined as ‘that of which the contrary is necessarily true’ (for example, the commensurability of the diagonal of a square with its sides), and distinguishes the possible and the impossible thus defined, from power (dunamis) and the lack of power (adunamia)” (ibid).

“Nevertheless, the definitions of Delta again carry an equivocity: in its second sense (that which is true), the possible includes the necessary, or what cannot not be: according to the first and third definition, on the other hand, it is identified with the contingent (to endekhomenon). It is this last sense that is mentioned in Prior Analytics book I: ‘that which is not necessary, and of which one can think that it exists without that leading to any impossibility'” (pp. 124-125).

“The possible is indeed defined sometimes as including, sometimes as excluding the necessary. In its first sense, it can be identified with logical possibility: that is called possible which is not contradictory; the necessary — that which cannot not be the case — can thus be called possible, in the sense that it is true (noncontradictory) to say that it is the case. But the possible can also be identified with the contingent: it thus no longer [indifferently] designates that which cannot not be, or again that which can be this or that. In this second sense, the possible is opposed no longer to the contradictory, but seems to be identifiable with power, understood as the power of contraries (being A or not-A), and of contradictories (being or not being” (p. 125).

We saw previously that both of two contradictories cannot be in act or be the case at the same time, but contradictories can both potentially be in act or be the case.

“The remainder of Theta 4, up to the beginning of Theta 5, nonetheless has the object of opposing determinism. This begins from the distinction between the impossible and the false. A strong determinist position in effect comes back to saying that nothing is possible that is not and will not be true. This position assumes a triple reduction, not only of the possible to the potential and of the potential to the actual, but also of the actual to the true” (p. 126).

This leads back to the position of the Megarians. But Aristotle clearly affirms that the non-actual is not impossible. She quotes, “It is false that you are standing right now, but it is not impossible” (ibid).

Aristotelian potentiality encompasses alternate possibilities.

Next in this series: An Aside on Necessity

Critique of the Megarians

Euclid of Megara (not to be confused with the geometer) was a student of Socrates who combined Socratic and Eleatic ideas. He reportedly claimed that virtue is knowledge of the Parmenidean One Being, which he also identified with the Good, God, reason, and mind. At a time when Megarians were banned from Athens for some reason, he is said to have entered the city disguised as a woman in order to listen to Socrates. He was present at Socrates’ death, and afterwards offered refuge to Plato and others in Megara. Socrates reputedly rebuked him for arguing more for the sake of winning than for the truth, but Euclid was said to have been very concerned with moral virtue. Plato credits him with having written down an actual conversation between Socrates and Theaetetus, which became the basis of Plato’s dialogue Theaetetus.

Euclid’s students were mainly interested in logic and argument. Some of them apparently founded a separate school, known as the Dialecticians, which developed a form of propositional logic. This latter group is considered to have been the major source for Stoic logic.

In chapter 3 of book Theta of the Metaphysics, Aristotle criticizes Megarian arguments that there is no distinction between power and act. Aubry quotes Aristotle’s restatement of the Megarian claim, “It is when a thing acts that it can act, but when it does not act, it cannot act” (Dieu san la puissance, 2nd ed., ch. 4, p. 122, my translation throughout).

Independent of Aristotle’s development of a normative and teleological dimension of act that plausibly extends even to physical motion, he is also very concerned to carefully distinguish between power and its exercise. Thus he had to confront the Megarians, who argued that there is no such distinction.

Later writers of quite varying persuasions have wittingly or unwittingly developed variants of this Megarian position. Nietzsche, for instance, explicitly denied the reality of anything that is not actual. Any kind of argument for complete determinism has a similar effect, as does theological occasionalism, which subsumes all becoming under the model of creation.

“Against this thesis, it is necessary to affirm not only the distinction of act and power but, more precisely, that with a given act can coexist not only the power of which it is the effect, but the power for another, opposed, act” (ibid).

Aubry noted a bit earlier that the emphasis on contraries in the discussion of rational powers is rather accidental. The more general point — expressed at the level of potentiality rather than power — is that potentiality includes multiple alternate possibilities concretely grounded in the same state of actuality. The more specific notion of contrariety only comes into play because — due to the fact power is consistently understood by Aristotle as power to do or undergo something definite — related deliberation may be conceived as about exercising a power or not.

She quotes Aristotle, “It is possible for a thing to be capable of being and nonetheless not be, or capable of not being and nonetheless be” (ibid).

This, it seems to me, is an unavoidable presupposition of any coherent account of becoming. It is again also the foundation of Aristotle’s account of human freedom. This way of approaching freedom is greatly to be recommended, because it avoids both the dubious and dangerous concept of a separate faculty of will distinct from reason, and the worse concepts of arbitrary will, or will as “superior” to reason.

“The critique of the Megarians indeed carries a double, and paradoxical, positivity: it invites us to think at the same time becoming in relation with dunamis, and energeia in relation with being. In doing this, it indicates also the double stakes of the inquiry: to think becoming and being at the same time; to determine the mode of their articulation.”

The dynamis–energeia pair is what uniquely enables Aristotle to think of being and becoming in a non-opposed way, though this is far from exhausting its significance.

“The extension from the kinetic sense of energeia to the ontological sense is presented as a deepening: otherwise said, and in conformity to what Theta 1 noted already, it is the ontological sense that is primary. In effect, if we have a tendency to consider that energeia is manifested above all in movement, this is insofar as we take it as an index of being” (p. 123, emphasis in original).

“For not to be in act but to be capable of being so, is also a mode of being: that which in-potentiality names. Of certain things that are not, but are nonetheless capable of being, one says thus that they are dunamei” (pp. 123-124).

Here we have a good example of the explicitly dative grammatical form of dynamis (dynamei) that she finds to be associated with Aristotle’s distinctive notion of being in potentiality. These are things that have being potentially, or are potentially thus-and-such. Here the emphasis is all on “things” in a state of potentiality, or potential “states of affairs”. Potentiality (as distinct from actuality) is the modality in which these have being and are said. This is indeed clearly different from a power to do, cause, or undergo.

“That which is in-potentiality, nonetheless, is not, ‘because it is not an entelechy‘” (p. 124).

We do not say of that which is in-potentiality that it “is” simply, or in an unqualified sense.

At the link above, I suggested that entelechy is probably the most important guiding concept of the Metaphysics. I have also suggested that entelechy serves as a kind of explanation for how ousia or (substance or essence, or what Sachs calls “thinghood”) works. In turn, Aristotle uses ousia to help disambiguate and organize what is meant by the various ways in which we say something is something. In the quote above, he directly uses entelechy as the criterion for what we do and do not say “is”. It is vitally important that he appeals to this much more nuanced concept, instead of referring back to the blunt instrument of a common-sense notion of existence or reality. For Aristotle, being, existence, or reality is not an explainer; instead, it needs to be explained.

Nonetheless, Aubry points out that here, Aristotle does not explicitly invoke the normative aspect of entelechy. We are still primarily investigating the more common “kinetic” sense of dynamis and energeia that accounts for physical motion. The aspect of entelechy that is to the fore is therefore that of the continuing activity that constitutes a substance as something persisting, or a motion as ongoing.

Next in this series: Potentiality and Possibility

Rational and Natural Powers

“Theta 2 prolongs the analysis of dunamis in proposing another distinction, which no longer opposes active power to passive power, but power that is rational or accompanied by a logos, to irrational power. This analysis marks progress in comparison with Theta 1, in that it considers at the same time the relation of power to its effect. In so doing it gives a maximal extension to the notion, in manifesting that it applies as much to animate as to inanimate beings, and as much in the field of nature as in that of techne” (Aubry, Dieu san la puissance, 2nd ed., ch. 4, p. 121, my translation throughout).

“What distinguishes rational power is that it can be power for two contrary effects, ton enantion, where irrational power is only for one sole contrary: thus, the medical art can produce sickness or health, while fire can only heat. The logos in effect ‘shows at the same time a thing and its privation’…. Privation, which we have seen cannot in any case characterize a power, but rather characterizes its contrary, impotence, is given as the object of the logos that governs it. This object is nonetheless derived, or ‘in a certain way accidental’: it is in initially considering the positive contrary, or the form, then in negating it by reasoning that we see the negative contrary. The primacy of the positive contrary is thus maintained” (ibid).

The medical art and fire are very different kinds of things. They are both called “powers”, but the one is “rational” and the other natural or “irrational”. The medical art seems analogous to the art of housebuilding that serves as the canonical example of an Aristotelian principle of motion or “efficient cause”. Fire for Aristotle is one of four material elements defined by a division in terms of primitive qualities. In a recent post, we briefly saw how even the cyclical transformations of these qualitative elements can fit into an ultimately teleological schema, without any extravagant hypotheses.

We saw in the last post that Aubry’s strong emphasis on the distinctively Aristotelian dative form dynamei as characteristic of being in potentiality does not by any means rule out a recognition that Aristotle in fact devotes more space to the more common nominative form dynamis, which can after all be reasonably translated as “power”, which has wider non-Aristotelian usage, and which plays an important role in Plato.

Aristotle specifies the applicable meaning of logos in this context as the rational deliberation that governs prohairesis or choice, and thereby also governs the exercise of power or capability.

In the case of natural powers like that of fire to heat things, for Aristotle it is always a matter of power to do, cause, or undergo something definite. Then independently, as a matter of general logic (and of even more fundamental ethical seriousness about consistency of our assertions), we must affirm that a power we have stipulated to be for something definite is just that. If we accept that a particular “power” is for something definite, then we must also accept that is not a power for the opposite of that definite something, nor indeed for anything other than what it is for.

It is thoughtful deliberation that involves a consideration of pro and con, and determines a choice about the exercise of a power that in itself just is what it is. In the rational case too, the power at issue is still a power to do something definite, just like a natural power. But here the governing deliberation — in order to be a genuine deliberation at all — must be fundamentally open, and not predetermined in its outcome. This is how rational animals have freedom. We have flexibility and plasticity in the exercise of definite powers.

So we see that outside of first philosophy, Aristotle does use a more conventional notion of power. But Plato, Aristotle, and the classical Greeks generally regarded the idea of unlimited power — and indeed anything unlimited — with a kind of horror. (It seems to have been Philo of Alexandria who introduced the very un-Greek notion of infinite power.) Aristotle treats both rational and natural powers always as powers for something definite. It is reason, and more specifically deliberation about alternatives — not power in itself — that allows us freedom.

“This analysis allows two requirements that are apparently conflicting, but equally essential to Aristotelian thought about power, to be reconciled: affirming its positivity, all while introducing within it an indetermination” (p. 122, emphasis in original).

This is a really essential point about the nature of freedom. Besides developing the wholly new concept of being in potentiality, Aristotle distinguishes much more clearly than his predecessors between the more common notion of power and its exercise. Freedom belongs to the thoughtful exercise of definite powers and capabilities, not to any power in itself.

Next in this series: Critique of the Megarians

Reading Metaphysics Theta

This will be the first of several posts on Gwenaëlle Aubry’s detailed analysis of book Theta of Aristotle’s Metaphysics. Here I will cover her introductory remarks.

In Aristotle’s text, “the ontological sense of dunamis and energeia, which the use of the dative expression to dunamei kai energeiai indicates, will not be explored at the outset. We depart from the kinetic sense of these notions, designated as corresponding to their current usage, but not from the project of the inquiry. And it is only later that we will see how dunamis and energeia exceed what is said solely in relation to movement” (Dieu san la puissance, 2nd ed., ch. 4, pp. 117-118, my translation throughout).

“This extension, nonetheless, is also a deepening: the ontological sense will be progressively extracted from the kinetic sense, and the sense ‘sought’ from the current sense, but as that which the latter presupposes. For the notions of entelekheia [entelechy] and of ergon [a work] which the beginning of Theta highlights play a fundamental role in the transition from the kinetic sense to the ontological sense of energeia: it is they that mediate between energeia as the name of movement and energeia as a sense of being. And again, they allow it to be understood that energeia says being: not only subsistence or presence, but the function in which is accomplished the form or essence (en-ergon), and in this also the end (en-telos). Energeia is thus found coordinated with dunamis not only as the effective to the possible, but as the end toward which it tends” (p. 118).

“[T]he transition from the kinetic sense to the ontological sense goes hand in hand with a transfer from the model of efficiency and of the correlation of powers to that of finality and the actualization. of the in-potential. This last model, as we have seen, is already at work in the physical and biological writings, but Theta gives it an ontological foundation” (ibid).

Where I see Aristotle’s teleological and normative explanation of being as an alternative to impoverished articulations of first philosophy as “ontology” (i.e., a pure concern with being as existence, subsistence, or presence), Aubry instead chooses to retain the term “ontology”, while transforming it into a teleological and normative account. What she calls the ontological sense of the terms is for me their teleological sense.

“We must begin by studying the kinetic sense (or the sense that is at the same time kurios, first from the point of view of current usage, and me khresimotatos, not the most useful, not the one we seek)” (ibid).

This kind of approach, which takes ordinary language and what is commonly accepted as starting point but eventually moves beyond them, is very typical of Aristotle.

“This usual sense of dunamis is that which book Delta [on things said in many ways] already explored, but nonetheless did not consider in its correlation with energeia. If Theta resumes the first definition and the different senses distinguished by Delta, it nonetheless orders them and operates a sorting among them: thus dunamis is initially designated as equivocal, but among its significations, certain are designated as purely homonymic…. By contrast, the other senses of dunamis can all be referred to a primary sense: that of a ‘principle of change in another thing or in itself as another’. This primary sense of dunamis is indeed an active sense. Nonetheless, the definition proposed in Theta does not manifest this as such, since it does not indicate whether the change in question is enacted or undergone” (pp. 118-119).

“Thus in Delta as in Theta, the distinction between active power and passive power is effaced before the univoval characterization of dunamis as arkhe, as principle of change: or better, the distinction of active and passive is offered as a trait of change more than of the power that presides over it” (p. 119).

Arkhe, which Aubry here renders by the French cognate of “principle”, is what Sachs in his translations calls “source”. Dynamis at the “kinetic” level is a source or principle of motion and change, which renders Aristotle’s phrase for what got Latinized as the efficient cause.

I’m beginning to appreciate that Aubry is far from claiming that dynamis never means power in Aristotle. When I recently began studying this work more closely, I was initially confused to see her frequent use of the French puissance, as opposed to her emphatically preferred en-puissance. (I think at least once in an earlier post I substituted English “potentiality” — which I’ve been using for en-puissance — for what should have been “power” (for puissance) in my translation. Regardless of the grammatical form in the the Greek, Sachs and other English translators choose one word — “potency” for Sachs, “potentiality” in older translations influenced by the Latin. This makes the distinction Aubry is focusing on invisible.)

As things are coming more sharply into focus with this closer reading of her work on Aristotle, I now think these uses of puissance are her reflection of the nominative form used by Aristotle himself in many passages. As she says, the nominative form could denote an active power, but the dative form rules that out. According to Aubry, what she calls the ontological as opposed to the kinetic sense — the distinctively Aristotelian being-in-potentiality, as contrasted with the more generally recognized power to move things — is mainly associated with the dative. But the nominative nonetheless plays quite a large role in Aristotle’s text. And it is quite appropriate for the kinetic sense of dynamis, the one associated with motion and largely anticipated by Plato. But she has first emphasized the symmetry and reversibility of active and passive dynamis, and now suggested that dynamis is in a way indifferent to the distinction of active and passive.

She quotes Aristotle, “It is indeed evident that in a sense the power of acting and the power of undergoing are one” (p. 120).

“Principle of movement, dunamis can also be resistance to a movement of deterioration or of destruction: it is as such a state of impassibility, a hexis apatheias…. It is necessary to note that on the other hand, the capacity of resistance to a movement toward the better is not qualified as dunamis…. One notes already the gradation between a neutral sense and a normative sense that the notion of energeia will engage” (ibid).

“Dunamis, whether it be active or passive, is always found associated with a positivity and a possession (hexis). It is its contrary, impotency (adunamia) and the impotent (adunaton) that one associates with privation, steresis” (ibid).

“[P]ower, whether active or passive, remains univocally characterized as a principle of movement, and as being of the order of possession and of positivity” (p. 121, emphasis in original).

Next in this series: Rational and Natural Powers

Potentiality for Interaction

“Before being elucidated in Metaphysics Theta as a sense of being, dunamis appears in the physical texts as the instrument of the thought of change and action. It is thus thought in the order of the correlation not of the in-potentiality to act, but of active power to passive power. The model is the mechanistic one of efficiency. This model is nonetheless subsumed under another, which for the correlation active dunamis / passive dunamis, substitutes that of dunamis to energeia, thus integrating the schema of efficiency under that of finality. The definition of movement and its characterization as the common act of the mover and the moved appears as an essential moment of this integration: it invites us to see in kinesis [motion] not only the result of the interplay between two powers, one active and the other passive, but the transition between two states of being. Interaction thus appears only as the means for actualization, the play of powers as the occasion of the realization of the in-potentiality” (Aubry, Dieu san la puissance, 2nd ed., ch. 4, p. 103, my translation throughout).

This all seems very sound. I would add only two more nuances. First, not only is so-called efficient causality or Aristotle’s notion of “sources of motion” subsumed by final causality, but it also subsumes mechanistic “action” under a broader notion of “means”, as in the example from the Physics in which the art of building is what is most properly said to be the source of the motion of building a house. Aubry herself also speaks of interaction as a “means for actualization”.

Second, she speaks here of interaction because Aristotle analyzes even the most unilateral, mechanistic physical “action” as a special kind of interaction between active and passive powers. Although Aristotle would also agree with Kant against Leibniz that there is real interaction between things, that is not at stake in the contrast here. For Aristotle, all action is really a kind of interaction in the special sense mentioned above, but I think what he means primarily to contrast with actualization is action as such, not interaction as such. I would thus suggest the friendly amendment “action appears only as the means for actualization”. On the other hand though, she is emphasizing the fact that all action for Aristotle is really interaction, which is also extremely important.

In On Generation and Corruption book I, Aristotle describes cyclical transformations of the four elements. Aubry notes that the elements are there said to have neither forms of their own nor any principle of autonomous movement. The reciprocal action of the elements is explained in terms of active and passive dunamis.

“[A]ction has for effect an assimilation of the patient to the agent; but always in the case of a material agent, it can entail a passion in return…. If dunamis determines the agent as well as the patient, it is indeed according to a reversible schema, and in a relation of co-implication” (p. 104).

“This first formula, which accounts for action by the correlation of an active dunamis and a passive dunamis, is nonetheless succeeded by another, which substitutes for the pair of powers that of in-potentiality and of act” (ibid).

“The agent is no longer solely determined as active, but as in act…. As for the patient, it is not only passive, but in-potentiality. If there can be action of the one on the other, it is because the effect is already present, dunamei [in potentiality], in the patient: fire, for example, can only heat that which is already hot-in-potentiality” (ibid).

She quotes from book II: “That which is hot in-act is cold in-potentiality, and that which is cold in-act is hot in-potentiality, so that, at least if they don’t equalize themselves, they transform themselves the one into the other” (p. 105).

She continues, summarizing “This cycle obeys the principle of the best, and has a finality of its own” (ibid).

“All the same, the elements are deprived as much of active power as of spontaneity. Their movement toward a place should not be understood on the model of action, or of the interaction of an active power and a passive power, but on that of actualization, and of the correlation of the in-potentiality and the in-act” (ibid).

“The case of elemental change indeed appears as an example of the substitution of the model of actualization for that of interaction, and of the model of finality for that of efficiency. Aristotle starts from the place where mechanistic explanation seems the most justified: the first elements, the original impulses of matter. But precisely, these are not, like the dunameis that fill the khora [receptacle] of [Plato’s] Timaeus, brute and disordered forces: they are passive powers, deprived of self-motion and of spontaneity, but which nonetheless are principles of movement, and have an orientation or a tendency. Between them and their act, the active power, efficiency, only intervenes as an exterior cause; it is nothing more than the occasion for their actualization” (p.106).

Far from serving as the primary model for causality in general, efficient causality in Aristotle only provides occasions for more essential causes or reasons why to operate. It is always only a means for something, a kind of circumstantial catalyst.

On the Soul book II distinguishes “two degrees of dunamis. The first, according to ‘the genus and the matter’ is a non-exercised native capacity — that in virtue of which every human is capable, simply insofar as she is human and possessed of reason, of understanding grammar; the second is a capacity already employed, exercised, the effectuation of which requires no supplementary apprenticeship, but simply the will and the absence of obstacles…; and finally entelechy, or the actual exercise of knowledge” (p. 107).

“The case of perception, like that of elemental change, must be conceived as a transition from second dunamis to entelechy. This kind of alteration (alliosis) neither affects nor destroys the nature of the subject, but on the contrary is ‘a progress toward itself and toward entelechy'” (pp. 107-108).

“Nonetheless, in the case of the apprenticeship of knowledge, the passage from first dunamis to second dunamis should also be conceived as alteration-amelioration…. More than on the distinction between two degrees of dunamis and between movement (kinesis) and change (metabole), it seems it is necessary to insist on that between two types of alteration, the one privative and the other positive. This distinction underlines once again that the intervention of the efficient cause and of the external agent can serve as the occasion of an immanent progress” (pp. 108-109).

“In the transition between the model of interaction and the model of actualization, the definition of motion as the common act of the mover and the moved also appears as an essential moment” (p. 109).

“In Physics III, movement is defined as the entelechy of that which is in-potentiality as such…. Movement, otherwise said, is the act of the dunamis of a being not as such, but as mobile: the process of fabricating a statue is not the act of the brass as brass, but of the brass insofar as it becomes a statue. Immediately proposed, this definition is designed as a sort of default; of movement, in effect, one can say neither that it is privation, nor power, nor act; it is necessary, ultimately, as difficult as this may seem, to define it as an incomplete act, energeia ateles, in opposition to a simple act, energeia haple” (ibid).

“Movement indeed manifests the power of a being whatever it is, that is, independent of what it is, [independent] as well as of that by which such a being can become other than it is…. Movement is indeed the the entelechy of a power as such, since being a power is being a principle of movement, but the power is always the power of a being that by that movement becomes what it is. As consequence, the distinction is not between two powers, but between becoming as the being of power, and the being in view of which there is becoming” (p. 110).

“If the analysis of movement makes appeal to the distinction between mover and movable, and indeed between agent and patient, this distinction nonetheless finds itself relativized: in fact… the mover moves in being itself moved — since there exists also, Aristotle points out, an unmoved mover. The agent indeed is at the same time patient, and the patient in its turn can become agent, so that everything is both agent and patient, poietikon kai pathetikon. But to this it must be added that act is the same in the agent and the patient” (ibid).

“The duality of agent and patient, or of mover and moved, is reabsorbed thus, according to the point of view specified, into that of in-potentiality and in-act. In-potentiality, to dunamei, recovers active power and passive power equally well: it is a point of view taken on both powers insofar as they in principle belong to one and the same movement, or again, insofar as they are the subject of one and the same accomplishment” (p. 111).

Nothing in the real world is ever purely active or purely passive. It is hard to overstate the significance of this.

“In the same way that book III of the Physics subsumes the correlation of powers under movement as the act of the in-potential, book Theta of the Metaphysics places movement under energeia, understood this time not as ateles [incomplete], but as identical to the telos [end]” (ibid).

Next in this series: Reading Metaphysics Theta

Ethical Roots of Aristotelian Dynamis

“The notion of dunamis is present from the earliest writings of Aristotle, associated each time with an ethical context” (Aubry, Dieu san la puissance, 2nd ed., ch. 4, p. 100, my translation throughout). She cites studies of this issue by D. W. Graham and E. Berti.

The Protrepicus is an Aristotelian dialogue, famous in antiquity as an exhortation for people to learn philosophy, but surviving only in fragments quoted by other authors. According to Aubry, it discusses dynamis in terms still based on those of Plato’s Theaetetus — a kind of having, as distinct from use — but it already introduces Aristotle’s neologisms of energeia and entelecheia, or act and the closely related notion of entelechy. Significations according to act are already treated as focal, relative to significations according to dynamis.

“Finally, the distinction also shows a normative and teleological sense” (ibid).

“The notion of energeia is found associated not only with that of usage, but also with that of good usage and that of end, and by the latter ultimately with that of ergon [a completed work] — the text having ultimately for objective the determination of the ergon of the soul, not only its function but the act in which its end properly resides” (p. 101).

We saw recently that Plato already used ergon in a sense like this. Aristotelian energeia is the fulfilling activity from which the Platonic ergon emerges.

“It is with a normative and teleological sense that the notion of ergon intervenes again in fragment 6: the accomplishment of the ergon in effect is that in virtue of which a thing can be called good, agathos, that in which also resides its virtue, arete. For in the case of a composite being, this work cannot be immediately determined: constituted of different parts, such a being is also constituted of multiple acts and multiple powers. Its end resides in the accomplishment of its best work, its most proper dunamis, indeed that of that part of it in which its identity most resides. For the human, her end and her happiness reside in the accomplishment of the power of thinking, phronesis, which is at the same time her divine part and her most proper identity. The notion of dunamis is thus articulated to those of ergon and of energeia, which themselves are articulated to that of end, telos” (ibid).

Much of Aristotle’s most characteristic thought is expressed here. (On a side note, I am especially intrigued that phronesis or practical judgment is here explicitly assigned the same ultimate role that theoria or contemplation plays in the Nicomachean Ethics. I have long been skeptical of any sharp contrast between these two. See Aristotelian “Wisdom”.)

“The Protrepicus strongly associates notions that were present but disjoint in Plato: that of effective usage, of ergon and end, which are conjoined in Aristotle’s invented terms of energeia and entelecheia” (ibid).

She also points out a discussion of dynamis in book IV of the Topics, where it is opposed to choice based on deliberation. No one should be blamed for a dynamis. “One does not say of a human who is capable of acting badly that she is bad…. The bad is the one who is not only capable of evil, but chooses it…. Contrary to what Platonic aristocratism affirms, there are no naturally good or bad [rational beings]; in particular, it makes no sense to speak of someone as naturally virtuous: because virtue, the Nicomachean Ethics says, is not a dunamis, a native power, an innate quality, any more than vice is. It is a hexis, a disposition acquired… by means of repetition of one same act, and of which the actualization, in its turn, is suspended from prohairesis [choice grounded in deliberation]” (p. 102).

Next in this series: Potentiality for Interaction

Substance, Essence, Form

Here I will partially translate and briefly comment on Gwenaëlle Aubry’s analysis of the argument of book Zeta of Aristotle’s Metaphysics in chapter 3 of her Dieu sans la puissance. I think it is important to carefully capture a fair amount of the technical detail, especially because she is in part arguing against the most widely accepted traditional interpretation of a key point in the interpretation of Aristotle, which has to do with Aristotle’s ultimate attitude toward form.

(For the sake of the general reader, I have elided her precise citations, which use the standard Becker numbers for lines in the Greek text. English for much of book Zeta is reproduced in my own initial commentary on it. I have also omitted numerous accent marks that are sometimes used in romanization of Greek words.)

Aubry notes that whereas Aristotle uses the same word ousia for both primary and secondary substance in the senses of the Categories (a “this” and a universal, respectively), medieval Latin translations used substantia for primary substance and essentia for secondary substance. One important question raised in the discussion has to do with whether there are any cases where the “substance” and the “essence” of a thing are the same.

At the beginning of Zeta chapter 3, ousia is defined in terms very close to those of the Categories, as something that is not said of an underlying thing, but rather is the underlying thing of which other things are said.

“Matter being that which remains, it seems to be a substrate in the physical sense of the term…. But it also seems to satisfy the logical signification of the criterion of hypokeimenon [underlying thing]” (2nd ed., p. 77).

“But it is precisely the adequation of matter to the criterion of hypokeimenon, in its double acceptance logical and physical, that manifests the insufficiency of this criterion — and by that also the necessity of completing the analysis of the Categories” (ibid). She quotes Aristotle: “But this is impossible, for also to be separate and a this seem to belong to an independent thing most of all” (Sachs tr., p. 120). “No more than it suffices to respond to the question ‘what is ousia‘ that it is the substrate, does it suffice to respond… that ousia is matter” (Aubry, p. 77).

“This new criterion, that of khoriston kai tode ti [separate and a ‘this’], nonetheless conserves a trait of ousia as defined in the Categories: the capacity for independent existence. The initial analysis of Zeta thus has the effect at the same time of accentuating this trait, and of distinguishing the notion of a capacity for independent existence, or that of subsistence, from those of substrate and subject” (ibid).

“[T]here where one would expect to see the examination of form as a candidate developed, it is an analysis of to ti en einai [the what it was to have been] that is deployed, with respect to both the essence and the object of a definition (Zeta [chapters] 4-6). Of form, eidos, there is no question before Zeta 6″ (p. 78).

“This approach is qualified as logikos [logical]…. The logical approach to ousia will be governed by two questions: first, is there no essence but that of substance (Zeta 4-5)? Then, in what cases is essence identical to substance (Zeta 6)?” (ibid).

“One begins from the logical definition of essence as that which is said in accord with itself (kath auto). In the Posterior Analytics, the first sense of ‘in accord with itself’ names precisely what is mentioned in the definition of a given being and constitutes its ousia” (ibid).

“One goes on to conclude that there is an essence for everything for which one can give an account in a definition…. One does not affirm, nonetheless, that to ti en einai is the ousia, but only that it pertains to it first. According to the steps characteristic of Zeta, one goes on to establish not an exclusivity, but an order of priority: thus, essence belongs first and absolutely, protos kai haplos, to ousia. To the other categories, it belongs only secondarily…, in a certain way…, not absolutely” (pp. 78-79).

“Thus associating essence and definition, one remains in a Platonic logic…, even if Zeta 5 establishes that definition can give account not only of simple substances, but also of composite substances insofar as they are composite, on the condition that the composition is not accidental” (p. 79).

“The question thus arises to know whether there exist substances identical to their essence: for these are the sort of beings that the Platonists call ‘Ideas’…. Formulating this point, Aristotle clearly designates to ti en einai [what it was to have been], or the essence, as principle of intelligibility, and ousia as principle of being: if they were separated the one from the other, he writes, there would be no knowledge of the one, and the other would not exist” (ibid).

If being and intelligibility were not inseparable, there would be no knowledge of the one, and the other would not exist. But they don’t exactly coincide, either. Something similar could be said about being and value.

“Otherwise said, the guiding question is to know in what measure substance is identical to its essence, or to measure the division between a being and its principle of intelligibility: it is not again to know whether the essence can itself be considered a substance, that is to say capable of a separate existence” (ibid, emphasis in original).

(This relation of substance to essence bears some structural resemblance to the relation between existence and essence discussed by Aquinas. The criteria currently under discussion for ousia or “substance” (“separateness”, and being a “this”) indeed seem to have something to do with common notions of existence. But the ousia or substance is said to be the independent thing, whereas existence is commonly treated as an abstract property that can be said of things. And for Aquinas, God gives existence to an essence. But Aristotle starts by recognizing independent things that implicitly already exist.)

“But it is necessary, before arriving there, to establish the equivalence between essence and form, or between to ti en einai and the eidos. This is what the following chapters (Zeta 7-12), where the term eidos reappears, are concerned with” (p. 80).

The earlier “logical” approach is succeeded by a more physical approach in Zeta 7-9. “Form is the physical equivalent of essence…. Form is the essence that is found really instantiated in particular indviduals” (ibid).

“One indeed finds in form two traits characteristic of ousia, and more precisely of ousia as Plato had defined it” (ibid).

“Form can indeed pretend to the title of primary ousia. But (and this is essential), the text of Zeta itself distinguishes between ousia prote [primary substance] and ousia malista [what is substance most of all]. In the Categories, on the other hand, these terms are associated…. But while the denomination ousia prote is applied in Zeta to the form, that of ousia malista is applied to the composite, sunolon: that which is ousia malista is a human, a plant — not the ungenerated principle of generation that is form, but the concrete thing that is generated, mixed of form and matter” (p. 81).

“Ousia prote must be distinguished as much from ousia malista as from ousia said simply, or haplos, which is not the form [as such] but the immanent [instantiation of] form, associated with the matter together with which it constitutes the composite. This distinction is explicitly formulated in the preceding lines, in relation to the problem of definition: the definition does not include the matter” (ibid, emphasis in original).

“Form and ousia prote are nothing else than essence [to ti en einai, what it was to have been a thing]” (p. 82).

“If ousia prote is not the same in Zeta and in the Categories, it is because prote [primary] does not have the same sense in the two texts” (ibid). She has already noted that Zeta 1 explicitly recalls that “primary” or “first” is said in more than one way.

On the other hand, “The ousia malista of Zeta does correspond to the ousia prote of the Categories: it designates the individual.”

“From this, the form is clearly distinguished: the form signifies toionde, ‘of what species’; it is not a tode kai horismenon, an individual being subject to definition, but it produces and generates a being of that species in the individual…. No more than the matter does it correspond to the criterion of tode ti [being a ‘this’]” (ibid).

“The eidos is not fully ousia; it is only primary ousia, its anteriority being at once epistemological, as the logical analysis showed, and chronological, as the physical analysis showed. The form is only ousia in a Platonic sense, as the object of a definition, principle of intelligibility and of permanence, in short insofar as it is nothing other than essence comprising identity at the level of a species, and transmitted, by art or by generation, from one individual to another” (pp. 82-83).

“There is indeed a tension between ousia prote and ousia malista…. If the analysis of Zeta 7 manifests this, it indicates also, and already, the means to resolve it, in introducing, in the context of the study of generation, the notions of dunamis [potentiality] and entelecheia [entelechy]. Their substitution, in Eta, for those of matter and form, authorizes the reconciliation of the candidates, the criteria, and does so for both series of ousia, prote and malista: and it is at the end of Theta that the initial reflection of Zeta on this anteriority finds its culmination, since act is there said to be anterior both to to logo and te ousia, both from the point of view of the formula and from that of substance…. It will thus be possible to think the ousiai proterai not, in the manner of Plato, as forms-essences abusively separated from the matter they determine and the individual they define, but as acts having both an autonomous subsistence and a full intelligibility” (p. 83).

“Nonetheless, if we have on the one hand confirmed the identity between form, essence, and the object of definition and, on the other hand, qualified that between these three terms and ousia, we have up to now left aside another term fundamental to the Platonic equation: the universal” (p. 84).

“The universal meets neither the criterion of [full] determination, since it is common to many things, nor the criterion of being a substrate, since it is always affirmed of a subject…. Thus the universal cannot be called ousia in the qualified and reduced sense that essence is” (ibid).

“Once the pretention of the universal to the title of ousia has been eliminated, it remains to examine the question of its equivalence to form and essence. This is more complex, since form and essence are indeed a certain type of universal, a determinate one. But the fundamental point does not lie in this: the break with Platonism does not come, as maintained by the traditional reading, by way of the distinction between universal and form, and the affirmation that only the form would be ousia; it lies above all in the affirmation according to which form or essence itself is not fully ousia, the idea indeed according to which it does not suffice to be ousia kata ton logon [ousia according to what is said] to be ousia malista [ousia most of all]” (pp. 84-85, emphasis in original).

Aristotle in general does greatly emphasize the importance of what is said. Plato goes further, in making definition the very criterion of ousia. But for Aristotle, concrete things are not reducible to their definitions alone, and it is the concrete things that come first.

“The Platonic solution having been eliminated, we are brought back to the problem from which it was born (and which Beta calls the most difficult of all: how to think the relation between the individual and its principle of intelligibility” (p. 85).

“This problem is related to another…, how to think eternal and intelligible substances” (p. 86).

“Zeta 17 introduces a new point of departure… the point of view of principles and causes…. [I]n investigating the cause, it is first of all to ti en einai [what it was to have been a thing] that is researched” (ibid).

“But what is found there brought to light is not the nature of separate substance, as we might have hoped, but on the contrary the correlation of form and matter in the context of the composite substance” (ibid).

“These lines are generally read as the conclusion of Zeta, and as an ultimate affirmation of the identity between form and ousia. But it seems that they mark much more the insufficiency of this result” (ibid).

“Considered in its etiological, and not only logical, function, and taken as end, the form, in effect, is act. For the notion of act, insofar as it is substituted for that of form, but by way of completion, permits the reconciliation of the different criteria of ousia, as well as resolving the tension between ousia prote and ousia malista” (p. 87, emphasis in original).

“Act is ousia, absolutely, and in the full sense, from the logical and epistemological points of view as well as the ontological and etiological. If act allows ousia to be thought according to the double criterion of separation and intelligibility, it also allows the intelligible and separate substances to be thought, as Lambda will show. As for the notion of dunamis, its correlate, it serves to allow the reintegration of the candidate that Zeta has discarded: matter.”

“The notions of dunamis and energeia have something remarkable about them that allows a maximal extension of the notion of ousia to be given, without falling into equivocation, but on the contrary resolving the conflict between substance and essence, as well as that between simple and composite substances” (ibid).

Next in this series: Entelechy and Hylomorphism

Mixing Up Plato and Aristotle

Chapter 3 of Gwenaëlle Aubry’s Dieu sans la puissance analyzes Aristotle’s discussion of ousia (“substance”) in book Zeta of the Metaphysics, and the transition toward potentiality and act in book Eta. The discussion is very dense, and will merit at least one further post. The whole chapter elaborates her argument for an important distinction between form and act. Here I will focus on her introductory remarks.

The key Aristotelian term ousia already had established usages in Plato, some of which conflict with the meanings Aristotle gave to it. According to Aubry, the traditional interpretations that attribute to Aristotle a notion of separate form independent of the composite depend on reading distinctly Platonic (and non-Aristotelian) meanings of ousia into Aristotle’s text. I won’t get to the full justification of this here, but it is coming. The term “separate” is also used differently by Plato and Aristotle. In Plato, it means apart from sensible things, but in Aristotle it means able to subsist independently.

“Contrary to that of potentiality and act, the couple of matter and form is never counted by Aristotle among the senses of being. It nonetheless became one of the fundamental motifs of scholastic Aristotelianism, to the point where the notions of dunamis and energeia are happily identified the one with matter, the other with form. This had the effect, in particular, that one could affirm generally that the unmoved First Mover is a ‘pure form’, even though Aristotle only designated it as act, and never used terms for which the translation could be ‘pure form’. This indistinction of act and form is also at the origin of the affirmation, also very widespread, according to which Aristotle would accept the existence of ‘separate forms'” (2nd ed., p. 67, my translation throughout).

She notes that many esteemed modern commentators, including Werner Jaeger and W. D. Ross, have followed this scholastic interpolation. For the absence in Aristotle of any terms translatable as “pure form”, she cites a 1973 article by E. E. Ryan, “Pure Form in Aristotle”.

“[I]t is hard to see what would lead Aristotle to forge two neologisms [energeia and entelecheia, or act and entelechy] to designate what a concept in the repertoire [eidos, or form] already sufficed to name. But what is more surprising is that in identifying act and form, and attributing to Aristotle the assertion of separate forms, one thereby attributes to him a doctrine he had himself combated in Plato, only in the end to reproach him for finally remaining a Platonist” (p. 68).

Modern criticisms of Aristotle have often targeted his alleged reliance on a notion of pure or separate form.

“The indistinction of form and act appears to us in effect to be at the source of numerous criticisms addressed to the Aristotelian metaphysics: thus one demands to know how it can at the same time admit the existence of separate forms, and affirm that the form is never given without the matter; one asks oneself about the coherence of an ontology having for its object both substances composed of matter and form and pure forms; one deplores the abstract character, the intellectualism, of a theology of pure form. But nevertheless, the reduction of act to form is also the basis of the traditional (‘onto-theological’) reading of the Metaphysics” (ibid).

According to Aubry, there are two principal differences between act and form.

First, “Only act implies subsistence; or again, only act is fully ousia — that which says also ‘separate entelechy’…. Form, on the contrary, is not [simple substance], because it does not exist in a separated state. If it is separable, it is only in a very limited sense, [according to the logos], writes Aristotle, or ‘according to the formula’; in the sense, certainly, where it can be thought and defined without the matter, but not in the sense where it could subsist by itself, independent of any material instantiation” (pp. 68-69).

Again, Aristotelian separateness is not Platonic separation from sensible being, but rather the capacity of a thing to subsist on its own.

Second, “Act nonetheless does not say being solely as separate, capable of subsisting by itself, but also as identical to the end and the good. This axiological significance only appears, before being confirmed in Lambda, in book Theta, at the end of the course by which the notion of act is substituted for that of form” (p. 69).

What she here calls the axiological significance of act — its essential involvement with valuations and ends — stands in contrast to its traditional “onto-theological” interpretation. Also, there now seems to be a question whether some of my own expansive remarks about form should perhaps be applied to act alone.

“[The substitution of act for form] explains the possible confusion between the two notions, but at the same time it indicates the procedure and the conditions which mark well that they are not simple synonyms. The principal operator for these appears to us to be the central notion of books Zeta and Eta and, to a lesser degree, of book Theta: the notion of ousia, as well as that of separation, which is strongly correlated with it. One of the great difficulties of book Zeta comes in effect from a partial conservation of the Platonic sense of the notions of ousia and of separation, which leads to a conservation of the primacy of form. Aristotle nonetheless also elaborates his own concept of ousia, which he associates with separation not in the sense of existence outside of sensibles, but as a capacity for independent existence. Thus redefined, ousia excludes form” (ibid).

That is to say, what Aristotle calls ousia malista [what is substance above all] excludes form. As we will see, she says that ousia in a broader sense subsumes form in the way that energeia and entelecheia subsume form, but this relation is not convertible — ousia, energeia, and entelecheia for Aristotle all cover more cases than eidos [form] does.

“This tension between two senses of ousia is reflected by the distinction, in Zeta, between ousia malista [what is substance above all] and ousia prote [primary substance], and by the correlative promotion of two candidates to the status of ousia: the composite of matter and form, and form. It is the intervention, in book Eta, of the notion of act that allows this tension to be resolved: act in effect satisfies at the same time both the Platonic criteria and the Aristotelian criteria for ousia, making it possible as a result to think both intelligibility and permanence, both essence and substance” (ibid).

“In Plato, the term ousia indifferently designates the reality, the existence, or the essence, the ‘what-it-is’ (the ti esti); it applies equally well to being in opposition to becoming, as to the totality of the real, or inversely to its terms in composition” (p. 70).

“Plato nonetheless also calls intelligible being, the Ideas and the Forms, ousia. Its distinctive characteristics are thus, along with intelligibility, permanence, immutability, eternity. On the other hand, Plato never makes separation, understood in its Aristotelian sense as capacity for independent existence, a distinctive criterion of ousia” (ibid, emphasis in original).

Whether Plato really must be read as asserting that the Forms are separate in an Aristotelian sense is a separate question, but there is no doubt that Aristotle and most others have attributed such a view to him.

For Aristotle, “Platonism consists in distinguishing from the sensible its principle of intelligibility (the universal and the definition), and giving to the latter an autonomous existence” (ibid). But for Aristotle, “That which is, is not walking, or good health, or a seated position, but the thing that walks, has good health, and is seated” (p. 71).

“Nonetheless, like being, primacy is said in many ways” (ibid).

“Among the traits characteristic of ousia, Aristotle preserves, alongside the criterion of separation, those which, in Plato, justify the primacy of form, such as permanence or intelligibility. These allow it to be well said that form is ousia, but in a qualified sense. Book Zeta is thus presented as a combinatory hierarchy of criteria that in turn serves to determine a hierarchization of different beings pretending to the title of ousia, but also a distinction of different degrees of ousia” (p. 72).

“[I]f form cannot be called ousia absolutely, it nonetheless retains a primacy from the point of view of the formula and of knowledge” (p. 73).

“It is precisely this conflict that is resolved in Eta by substitution of the notion of act for that of form…. [Act] thus names the unity of the subsistent or separate individual, … as well as its principle of permanence and intelligibility. Thus only the notion of act satisfies all the criteria of ousia, in that it permits the reconciliation of the Aristotelian requirement of autonomous subsistence and individuality with the Platonic one of permanence and intelligibility” (ibid).

“For the combinatory hierarchy of Zeta is thus substituted an integrative synthesis [in book Eta]” (ibid).

“Considering form as act is in effect considering that in it which acts as an end, that is to say the principle of a becoming at the end of which matter is fully determined by form, and the form realized in a matter” (pp. 73-74).

“[I]f there can be no form without matter, there can on the other hand be an act without potentiality” (p. 74, emphasis added).

In an upcoming post(s), I’ll treat Aubry’s substantiating analysis of books Zeta and Eta.

Next in this series: Form and Entelechy

Being and Becoming

“Our hypothesis is the following: the division of being into [being] in potentiality and [being] in act has a greater extension than that according to the categories. If the latter only determine the mobile and composed substances, act is said also of the immobile, and its priority over potentiality allows the relation of the immobile substance to the mobile substances to be thought” (Gwenaëlle Aubry, Dieu sans la puissance, 2nd ed., ch. 2, p. 51, my translation throughout).

“Dunamis [potentiality] and energeia [act] are the foundation of an anti-Parmenidean ontology, which articulates movement with being. They respond thus to the requirement defined in [book capital Alpha] for a science capable of giving account of both being and movement, both the one and the multiple. Since book Gamma, the notion of dunamis serves to resolve the dilemma of becoming: the posing of being in potentiality allows overcoming the impasse of emergence (that it is from non-being that being comes) as well as that of coexistence (that it is from contraries pre-existing in act that all being comes)” (pp. 51-52).

As Aristotle well recognizes, these impasses related to becoming imply that pre-Socratic notions of “being” were severely flawed.

“Invoked to think not only becoming, but the being of becoming, sensible and mobile substance, the notions of potentiality and act serve, over books Zeta and Eta, to replace those of matter and form. It is in book Theta, in backwards order, that the process finds its justification: the ontological pertinence of the two notions is there underlined, and their transfer from the field of movement to that of being, elucidated. At the end of book Theta, finally, are formulated the conditions for an extension of dunamis and energeia from the field of corruptible substances to that of eternal substances” (p. 52).

Again, for Aristotle, “eternal” means not radically outside of time as it does in Augustine, but simply persisting forever.

Aubry wants to recover a sense for Aristotelian being-as-such that is not the “absolutist” one of a first Being, argued for by excellent Thomist scholars like Joseph Owens. In passing, she cites Aristotle’s aversion to pursuing ultimate explanation in terms of “numbers, lines, or fire” (p. 53). As Aristotle says in book Gamma, “for us too it is the first causes of being as being that must be gotten hold of” (ch. 1, Sachs tr., coincidentally also p. 53). Aubry notes that this also takes us beyond any consideration of being as a genus or species.

But in spite of the fact that being is not a genus, the first causes for Aristotle are common to all beings. She refers to the “focal” meaning of being as ousia, while arguing that ontology is not reduced to the study of substance. She alludes to Aristotle’s inclusion of the knowledge of axioms and the principle of non-contradiction in the knowledge of being, while pointing out that the principle of non-contradiction is not a cause. She notes how Aristotle first mentions then dismisses incidental sayings of being, and the saying of being in the sense of true and false.

She discusses Pierre Aubenque’s argument that being in the senses of the Categories is more fundamental than potentiality and act, commenting that it encounters a difficulty in Aristotle’s explicit development of a sense for potentiality and act that goes beyond their use in the explanation of motion. She notes that Franz Brentano among others argues the opposite: potentiality and act are not reducible to the categories. She doesn’t think Aristotle addresses this question of priority explicitly; any answer will be based on analysis of what Aristotle does with the respective terms.

Both the categories and potentiality and act are at the basis of a non-Parmenidean ontology. The pair of potentiality and act in particular allows for the articulation of “a certain non-being” within being. Saying according to the categories, too, generates affirmations that from a Parmenidean point of view would be paradoxical. Every predication says that something “is” something other than just what it is.

“Potentiality is in effect the place where contraries can coexist” (p. 61). “It allows becoming to be thought without violating the founding principle of being and of discourse [non-contradiction]” (p. 62). “In opposition to the Eleatics, the distinction of potentiality and act plays the same role as that of substance and accident against the Sophists: it founds the possibility of predication. The accent is nonetheless inverse: if it serves, in Gamma 3, to reconnect the diversity of predicates to the unity and the identity of a subject, it serves here to relate one same subject to the possible plurality of predicates” (ibid).

“There is nonetheless one thing that dunamis and energeia say that the categories do not say: the becoming other of the same, the becoming multiple of the one” (ibid). Here she recalls Aristotle’s polemic against the Megarians in book Theta. The Megarian denial of the difference between act and potentiality makes becoming unintelligible, because it eliminates all continuity within change. This makes the explanation of change impossible.

“Dunamis thus appears as the very instrument of the thought of becoming” (p. 66). And “not only becoming, but being in becoming” (ibid).

Next in this series: Mixing Up Plato and Aristotle

Distinguishing Act and Form

“In fact, the notions of form (eidos) and of act (energeia or entelecheia) are not equivalent; and if the first belongs to a Platonic vocabulary, the second is an Aristotelian invention. It belongs, as such, to an anti-Platonic project: there is no sense, for Aristotle, in posing ‘pure’ or ‘separated’ forms, that is to say forms subsisting outside of and independent of the composites that they define. Form is not separable except ‘by logos‘, ‘according to the formula’, which signifies also that form is not fully ousia, fully substance” (Gwenaëlle Aubry, Dieu sans la puissance, 2nd ed., part 1, introduction, p. 23, my translation throughout).

For Aristotle, form is only separable from the embodied composite analytically, in speech or in thought. Though he was Plato’s star pupil for 20 years and continued to be influenced by Plato in other ways, his project is “anti-Platonic” in the sense that he specifically criticizes the notion of separate form, with which Plato is famously associated.

“It goes otherwise for act, which implies separation, understood as autonomous subsistence, and therefore has the value of another name for ousia. Act, nonetheless, is not only another name for substance. Identified with the end, it is also [identified] with the good. Being in act is not only to subsist, it is to subsist as adequate to its form and to a form that, posed as end, is also posed as good…. Act thus is not only another name for being, but also for the good: or more, insofar as it says the good as real, or as realized, [it] names the identity of being and the good” (p. 24).

Here it is important to recall once again that all the senses of “being” Aristotle discusses in the Metaphysics involve being as a transitive verb (i.e., being this or that), not being as a noun. Being in the sense of existence simply has no place in this account. The identity of the senses of being as a transitive verb with those of the good tells us that the saying of transitive being for Aristotle has a normative character. Talking about the being or essence of things is talking about value, and making value judgments.

“Certainly, [the idea of] the unmoved First Mover does not come in response to the question of the emergence of being, but to that of the eternity of movement — both the continuity of the movement of the stars, and the perpetuity of the cycle of generation and corruption. This is why [book] Lambda [chapter] 10 [of the Metaphysics] can also designate the good as the cause of taxis [order], associated both with the movement of the eternal sensibles and that of the corruptible sensibles. If it is not an efficient cause, the First Mover nonetheless has an efficacity, or an influence on the world, which follows from the very fact that it has no power. For the purely actual substance, indeed excluding power as much as movement, is required as the condition of movement (Lambda 6 and 7). Again, it is necessary to determine the way in which it is [required]; Lambda 7 invokes the notion of final cause, which it is nonetheless necessary to understand in a particular sense: not in a sense in which the unmoved substance is itself the act and the end of the other substances, but in the sense in which, aiming at their proper act, the latter aim at the same time at its characteristic necessity. To understand this, it is not necessary to have recourse to the notion of imitation: the relation of the pure act to the substances mixed of act and potentiality is determined by the different relations of the anteriority of act to potentiality distinguished in Theta 8.” (p. 25).

Aristotle is saying that the good in general or value in general is a condition for the possibility of all movement, both celestial and terrestrial. Every being is moved by some good or other. Aubry is here explaining the difference between Aristotle’s own view and the “ontotheology” that Heidegger and others have attributed to him.

“[The pure act’s] efficacy could be called non-efficient; its strength merges with the desire it arouses. Designating god as act, Aristotle identifies his mode of being; determining the mode of relation of act to potentiality, he identifies his mode of action….”

“But by this, Aristotle also identifies the mode of being and the mode of action proper to the good. It is perhaps thus that it is necessary to understand his insistence in affirming that he is, of all the philosophers, the first and the only to have posed the good as a principle….”

“The singularity of the Aristotelian theology as a theology of the good, and of the power proper to the good, can nonetheless not be known except on the condition of taking seriously the designation of the First Mover as pure act. This supposes in particular that the Aristotelian inventions that are act and potentiality are not reduced to form and power. The Aristotelian theology, that is to say the science of unmoving and separate substance, appears only in effect as one of the areas of application of an ontology or, at least, a general ousiology, which has for its foundation the notions of act and potentiality” (p. 26).

In contrast to the ways being is said in the senses of the Categories, which are “inadequate for speaking about the first unmoving being, [act and potentiality] allow both the difference and the relation of moved and unmoved substances to be thought. In a more general way, act and potentiality are at the foundation of an anti-Parmenidean ontology, …allowing being, movement, and their correlation equally well to be thought” (p. 27).

Aubry points out that the notions of act and potentiality first arise in the discussion of motion. But book Theta of the Metaphysics is dedicated to reshaping them in a way that applies to “being” as well as to motion. It is more particularly through act and potentiality that beings are constituted as the beings they are.

“Movement, in effect, should not be understood only in the order of interaction, but also in that of actualization. Or again: movement should not be understood only in the order of the correlation of an active dynamis and a passive dynamis, partitioning the field of efficiency into an agent and a patient, but in that of the correlation of dynamis and energeia” (ibid).

“But the dynamis found thus to be correlated to act, and which designates a state of being, is therefore irreducible to power: being in potentiality, coordinated with and determined by act, is neither passive nor efficient. Or again, potentiality is reducible neither to active power nor to passive power. The notion of potentiality serves to name the very possibility of the interaction of an agent and a patient in view of a change determined and finalized by act.”

“The correlation of potentiality to act nonetheless does not exclude that of passive power to active power: but it subsumes it, or subordinates it, insofar as it carries a greater intelligibility. It invites us to consider that which, in an impact, a meeting, or an interaction, is the occasion of an accomplishment. It is a point of view taken on that which, in movement, makes itself, that is to say not only makes itself but perfects itself…. Aristotle’s universe is not exempt from impacts and meeting: the substances that populate it are not Leibnizian monads…. The order of efficiency is a real order, but subordinate to that of finality” (pp. 28-29; see also The Four Causes Revisited).

“Potentiality is indeed for a being the real possibility, inscribed in the very qualities that give it its essence, of realizing that essence. Potentiality is the index and the principle of the becoming that leads a being to its accomplishment. It bears at the same time the distance between a being and what it has to be, and the possibility of crossing that distance. If act names the identity, real or realized, of being and the good, potentiality names this identity as to be realized. It inscribes into being at the same time as the concreteness of mediation, the possibility of perfection” (p. 29).

“The ontology of potentiality bears with it at the same time the thought of a possible perfection, realizable here and now, and that of failures, of accidents, of bad encounters, of unsuccessful mediations that could counter it” (ibid).

For Aristotle there is no “problem of evil”. Things are at one and the same time both imperfect and perfectible.

Again, I prefer to drop the term “ontology” altogether, because it is strongly associated with a (non-Aristotelian) approach to first philosophy that focuses on being as a noun, and in the sense of existence. Aubry retains the traditional term, but gives it a different meaning that is less prejudicial.

Far be it from me to claim to have the one true interpretation of these sharply contested points about Aristotle’s Metaphysics, but the key features of Aubry’s account seem to fit very well with my own examination of the text.

Aubry has emphasized the role of Plotinus in the historic re-interpretation of Aristotelian act and potentiality. I would note that the later neoplatonic school at Alexandria under Ammonius (5th/6th century CE) — especially Ammonius’ students Simplicius and John Philoponus — also produced extensive commentaries on Aristotle with a neoplatonic slant, which helped shape the way Aristotle was read in medieval times.

Ammonius argued that Aristotle’s first cause is after all also an efficient cause. Simplicius, who is also a major source for quotes from lost works in the history of Greek philosophy, added two more distinctly neoplatonic kinds of causes to Aristotle’s four. Philoponus was a Christian Aristotelian who defended creation from nothing, and was cited by Galileo as an inspiration for the impulse theory of motion. The impulse theory decouples physical motion from any teleology, paving the way for early modern mechanism.

Next in thus series: Aristotle on the Platonic Good