Aquinas on the Act of Thought

In a few very dense pages, Alain de Libera summarizes a number of key theses extracted from the works of Thomas Aquinas pertaining to the act of thought (see also “The Subject” In Medieval Times; Origins of a Subject-Agent). According to de Libera, these principles — which represented a significant departure from Augustine’s insistence that the human soul should not be viewed as a “subject” in the sense of something standing under something else — attained a wide currency in Latin scholasticism. They laid the groundwork for the modern notion of “the subject” as active mind and ego.

“Thought is an action (actio) or an operation (operatio) called ‘intellectual’ (intellectualis) or ‘intelligible’ (intelligibilis) because it is the deed of intellect and treats of the intelligible, and unites these two dimensions in its proper actuality. Intellectual has two senses: subjective and causal. Contemplation, also called theoretical thought, the knowledge of the intelligible, is intellectual because it takes place in the intellect itself, which is to say that, relative to the body, it is atopical or utopical [without place], because the intellect itself is not located in the body; the other actions called intellectual are so in a causal sense; they are called such because they are directed or imposed, that is to say commanded, by the intellect and executed by means of a bodily instrument — with respect to which, in distinction from the act of thought — they are localizable and localized: this is the case, for example, with walking and riding, two actions called imposed.”

“…There are two kinds of actions: one remains internal to the agent, begins and ends in it (it is called: manens [remaining] or consistens [consisting] or quiescens in agente [resting in the agent]); the other is exercised on another thing or an exterior matter (it is called: exiens [coming out] or progrediens [moving forward] or tendens [tending] or transiens in alterum [passing into another] or in materiam exteriorem [into the matter of exteriors]). This duality prolongs the Aristotelian distinction between immanent action and transitive action…. The distinction, massively utilized to theorize the difference between the psychic (where immanent causality reigns) and the physical (where the transitive reigns), is also applied within the physical sphere, notably to light….”

“…Only that which is in act acts (Nihil agit nisi secundum quod est actu). This fundamental thesis, which lays the foundation of the articulation between actio and actus [action and act], introduces itself in diverse other formulations, such as: Omne agens agit, inquantum actu est [every agent acts, insofar as it actually is], or Unumquodque agit secundum quod est actu [each one acts according to what it actually is]. We will call it ‘the principle of the actuality of the agent’.”

“Numerous principles arise from this or assume its validity. This is the case with [the principle that] that by which something first operates is the form of the operator; the principle of the subjection of action in the power of the agent… and the subjective principle of action [actions belong to something standing under them]” (Archéologie du sujet vol. 3 part 1, pp. 53-56, my translation). De Libera goes on to mention additional principles such as “attribution of action to the principal agent” (pp. 56-57); “action is a function of the being of the agent” (p. 57); “determination of action by the nature of the agent” (ibid); “determination of action by act” (ibid); and “actuality is a determination of the act of an agent” (ibid).

The bottom line of all of this seems to be that thought is the action of an agent. Neither Aristotle nor Augustine treated thought in this way or had this kind of view of action and agency, but a long medieval and modern heritage makes it seem like common sense to many people. Aristotle spoke of intellect as coming to us “from outside”. He was certainly very interested in practical doings, in process, and in being-at-work, but did not reduce these to the discrete “actions” of discrete “agents”. Activity, I want to say, is something different and broader than this. (See also Not Power and Action; Aristotelian Actualization; Aristotelian Subjectivity Revisited).

“The Subject” in Medieval Times

According to Alain de Libera in the second half of Archéologie du sujet vol. 1, Thomas Aquinas was instrumental in developing a view of the soul that was neither Aristotelian nor Augustinian, and that paved the way for the modern concept of “the subject” as an agent, long before Descartes. De Libera says that Aquinas did this in part by introducing the different, very abstract Aristotelian notion of subject (hypokeimenon, “thing underlying”, with no connotations of mind or agency) into the Augustinian model of the soul as an image of the Christian Trinity, and simultaneously introducing the Augustinian biblical Word into an Aristotelian model of abstractive knowledge. Aquinas also drew indirectly on Plotinus, and directly on his teacher Albert the Great’s use of pseudo-Dionysius. In doing so, he effectively removed the stigma Augustine had placed on treating the human soul as a “subject”.

Aristotle had suggested that there is a kind of identity between thinking and what it thinks. It is perhaps not accidental that we use different senses of the same English word “thought” for both. These should not be equated with subject and object in the modern sense; they both occupy parts of a kind of middle ground between what we call subject and object.

According to de Libera, Plotinus developed a kind of identity between three terms (nous, noeisis, noeton — intellect, intellection, intelligible object). His intellect and intelligible object are already somewhat closer to what we call subject and object. In between, he placed an act of thinking or intellection that was to have a kind of identity with both the intellect and the intelligible object.

Plotinus’ notion of act is also quite different from that of Aristotle. Aristotle calls the first principle a kind of pure act that is not an action in the ordinary sense, and has nothing else behind it; for Plotinus, the first principle is a power, and every act is the act of a power. For Aristotle, the first principle is also an end only; for Plotinus, it is both the end and the origin of all things.

The persons of the Trinity are supposed to have a sort of mutual immanence to one another that is completely unlike the case of something underlying something else. De Libera notes that Plotinus and his student Porphyry already used a similar concept of mutual immanence in their discussions of intellect. Augustine ranked his reading of Plotinus as a formative experience second only to his conversion to Christianity.

From the Christian neoplatonist pseudo-Dionysius, Albert the Great drew the notion of a “whole of powers” that is different from either a universal whole or an integral whole.

De Libera notes that the classic formula of the Trinity in Greek — one ousia, three hypostases — was confusingly translated into Latin as “one essence, three substances” or as “one substance, three persons”. By substitution, the coexistence of these two translations yields the obviously self-contradictory formula, “one substance, three substances”, which graphically illustrates the equivocation in medieval usages of “substance”.

(In deference to common usage, I have continued to use “substance” for Aristotle’s ousia, even though I think it is a terrible translation. “Essence” is better, provided we recognize that Plato and Aristotle had views of essence that were not “essentialist” in the sense of treating essences of things as pre-given or as something to take for granted.)

De Libera speaks of the need to parenthesize modern notions of subject and object in order to understand Augustine’s opposition to treating actions and passions of the soul as attributes of a substance. Conversely, for better or worse, Aquinas’ legitimation of this way of viewing the soul brings us closer to modern views. (I think Aristotle would have shared Augustine’s opposition to this formulation, but for different reasons. I think Aristotle regarded the whole human being — and not the soul or the body taken separately — as a “substance”.)

Aquinas introduced emphasis on both what de Libera calls an Aristotelian structure of subject-powers-activities and a pseudo-Dionysian structure of essence-power-operation into a Latin-speaking theological context that had been mainly dominated by Augustine. What I would call this double infusion of additional neoplatonic elements is said by some to have resulted in a more dynamic and relational way of viewing things. (In agreement with Gwenaëlle Aubry, however, I think Aristotelian potentiality is very different from neoplatonic power, even though they use the same Greek word.) Combined with Aquinas’ serious embrace of a version of Aristotelian hylomorphism, this infusion led to a simultaneously more positive and more dynamic view of worldly existence than had been common in the Augustinian tradition, which also helped lay the seeds of modernity.

A broadly neoplatonic view of the world in terms of powers and operations-of-powers thus turns out to have been very important for the emergence of the modern subject-as-agent (as well as, I would argue, the rise of the specific modern notion of causality). De Libera notes that Heidegger ignored both neoplatonism and theology in his famous account of the rise of the modern subject. Meanwhile, Aquinas’ legitimation of the treatment of actions and passions as attributes of a soul-subject-substance — coupled with the interweaving of such attribution with imputations of responsibility — seems to have contributed to a stronger notion of a self as something with univocal identity and sharp edges.

Origins of a Subject-Agent

How did the modern equation of subjecthood and agency come to be? How did the notion of “I” or ego come to be substantialized? An extremely influential argument of Heidegger makes this an innovation of Descartes. Alain de Libera argues that this is too hasty, and that the groundwork for this identification was actually laid in the later middle ages. I’m continuing a high-level treatment of de Libera’s extremely important archaeology of the subject (see also On a Philosophical Grammar).

Answering this question will involve an extended historical odyssey through complex interactions between Aristotelian and Augustinian views, and much more. De Libera sees Aquinas in his polemic against Averroes raising four interrelated questions of a more fundamental nature: Who thinks? What is the subject of thought? Who are we? What is man? The second of these seems to have been first asked by Averroes. The other three are largely attributable to Aquinas and his contemporaries, in their reactions to Averroes.

Several points of Aristotelian interpretation (What is substance? What is form? What is act? What is an efficient cause? What is the soul?) will be relevant to answering these, as will Augustine’s meditations on personhood and the nature of the Trinity. De Libera notes that John Locke — a major contributor to modern views on “the subject” — was deeply involved in debates on trinitarian theology. He also discusses Franz Brentano’s modern revival of the medieval notion of intentionality. The medieval version was closely bound up with a notion of “inexistence” or “existing in” of mental objects (forms separated from their matter) in the soul.

In the Categories, Aristotle gives substance the logical sense of something standing under something else. This influenced the Greek grammarians who formulated the notion of a grammatical subject. But in the Metaphysics, he treats this as only a starting point that is quickly superseded by an identification of substance with form or “what it was to have been” a thing, before moving into an account of substance as potentiality and actuality.

De Libera notes a historic division among readers of Aristotle’s treatise On the Soul between those who interpret the soul as an attribute of the body, and those who treat it as a substance in its own right. The latter position has different meanings, depending on whether substance is taken in the “standing under” sense or in the sense of form. De Libera will be particularly interested in the consequences of a further family of positions that make the non-obvious equation of human actions and passions with attributes of the soul.

He notes that “category” in Greek originally meant accusation, and relates this to Locke’s characterization of personhood as a “forensic” notion. We have here to do with subtle relations between attribution, inherence, and imputation with respect to actions and passions in relation to the soul. But what is an action? Must we explain an act in terms of a substantial subject’s power of efficient causation in a late scholastic sense that is far from Aristotle’s? (See also Expansive Agency; Brandomian Forgiveness.)

Time and Eternity

One of Kant’s innovations was a new analysis of the constitution of temporal experience. His famous theses about the role of synthesis in experience provide new insight into the paradoxes of temporal being or “becoming”, and its relation or non-relation to something outside of time. These had been raised by pre-Socratics like Heraclitus and Zeno of Elea, and more satisfactorily treated by Plato and Aristotle.

Heraclitus famously said that everything flows, you can’t step into the same river twice, and things change into their opposites. Zeno went in the opposite direction, conceiving space and time in terms of instants and points, neither of which have any magnitude. He then pointed out that motion at a durationless instant is a logical contradiction. On this basis, Zeno claimed to prove various things that violate common sense, such as that an arrow can’t fly, and that the speedy Achilles could never catch up with a turtle that had a head start. From this he concluded that motion, space, and time were mere illusions.

Plato seems to have at first focused on a sharp distinction between true “being” as eternal on the one hand, and becoming in time as mere appearance on the other. This distinction allowed him to have it both ways. But in dialogues that are thought to have been written later such as Theaetetus and The Sophist, he came to suggest that being and time are not simply two disjunct categories.

Aristotle made time and space more intelligible by developing notions of duration and extension. For Aristotle, duration and extension come first, while durationless instants, magnitudeless points, and pure flux are all abstractions. I see him as an early advocate of the primacy of process. For Aristotle, the key to making this viable is to be able to explain how becoming as we experience it is really not just a pure flux, but rather is full of islands of relative stability that allow us — contrary to Heraclitus — to reidentify objects as having an underlying basis of sameness that persists through various kinds of change. It turns out that the edges of the islands are not rigidly distinct, but he developed the notion conventionally translated as “substance” to explain our experience of the relatively persistent form of their middles.

It is here that Kant’s contribution is significant. Aristotle develops a plausible account of the persistence of form through change, but he discusses it mainly from the point of view of how things are, even though he separately suggests that experience is also shaped by processes of interpretation by us. Kant took up that suggestion, and developed it in considerable detail. Kant consistently emphasizes our role in constituting the stability of form of things we experience in time, though he also insists on an “empirical realism” that justifies most of what we get from so-called common sense. This implies that for Kant as well, there implicitly must be some basis in the way things are, for the stable constructs we come up with. Much of Hegel’s Phenomenology was devoted to a further development of these Kantian insights.

The neoplatonists and Augustine insisted that things in time have a source and destination in eternity. Classic neoplatonism attempted to treat this relation as a sort of quasi-logical unfolding of the divine essence, while Augustine identified it with the act of creation. The relation of temporal being to eternity remained a notorious point of difficulty in neoplatonism, while Augustine called it a mystery.

Hegel thought that Augustine ended up locating all reality in the Eternal, and that this resulted in a devaluation of actual life and experience. Aquinas already used ideas from Aristotle to allow for a more positive evaluation of temporal being. Some spiritual traditions go further and suggest that we humans have a sort of co-creator role in the world we experience. But it was Kant who mainly developed the basis for a non-supernatural explanation consonant with the spirit of this. The main point is that the world is not initially given in the form of pre-existing objects. We separate out objects from the sensible continuum, but at the same time this is not an arbitrary operation. We can’t just materialize a unicorn by thinking of one, but we do play a major active role in the construction of universals like “horse”, and in the recognition of persistent individuals.

Essences of things, once constituted, seem to “subsist” in some virtual way outside of time. The traditional view was that essences are straightforwardly built into the nature of things, or else simply dictated by God. Either way, this means that for us, they would be pre-given. I don’t think Aristotle really regards them this way, but only in the special case of biological organisms does he investigate their genealogy. Kant on the other hand effectively develops a generalized genealogy of essences, showing how they can be understood as temporally constituted.

Another of Kant’s big innovations is in explaining how we play a significant role in our own constitution. I think it is a grievous error to regard such processes of self-constitution as beginning with a blank slate, or as magically independent of real-world constraints, but there is a very important way in which we end up defining who we are — not by an explicit decision, but indirectly through the sum total of our commitments, actions, and responses to things.

That ethical “who we are”, while originating in time, is itself an essence with virtual subsistence. As with all essences, considered in its virtual subsistence, it is eternal. Aristotle would say that our essence stops evolving when our temporal being comes to an end. At that point, who we were is finally stabilized, as the total act of a life.

Receptive Power?

The later neoplatonists developed a subtle and somewhat paradoxical notion of passive or receptive power. I call it paradoxical because “passive power” almost seems like an oxymoron. In modern terms, it is hard to see how something purely passive could meaningfully contribute to an effect, or even be called a “power”. But in a neoplatonic context, active and passive powers function as correlative terms that collaborate — albeit asymmetrically — to produce effects. When a “patient” is properly prepared, an appropriate “agent” power is supposed to spontaneously come to dwell within it.

All the change is on the side of the patient, whereas what is called “agency” in neoplatonism belongs on the side of the eternal and unchanging. Exactly how a patient in time comes to be properly prepared to be receptive to an eternal agent when it was not before is admittedly rather obscure.

In his late polemics against Pelagius, Augustine treated the agency of grace as residing entirely on the side of the eternal, even going to the extreme of denying that grace in any way depends on the merit or innocence of the recipient. His point seems to have been that grace does not depend on any kind of self-will, no matter how virtuous or innocent it may be — that it is always only received as a gift.

However obscure the neoplatonic notion of the preparation of patients may seem, in the context of a problematic like that of late Augustine, the attribution of effective reality to passive powers suggests a way out of the impasse we are left with if we consider only grace and self-will. Merit or innocence could be considered as configurations of such “passive powers”.


I’m still slowly working my way through Gwenaëlle Aubry’s Genèse du dieu souverain. She notes that Peter Abelard’s student Peter Lombard (1096-1160) — whose Sentences became the standard textbook of Christian theology throughout the later European middle ages — rejected the novel teachings of Abelard, and defended basically Augustinian views on omnipotence. A more radical notion of omnipotence was advanced by Hugh of Saint-Cher (c. 1200-1263), who first introduced the distinction between God’s potentia absoluta or “absolute” power, and what he called potentia conditionata or “conditioned” power, which later authors referred to as potentia ordinata. Although Bonaventure, Albert the Great, and Thomas Aquinas among others rejected Hugh’s distinction, it would later be adopted by Duns Scotus and many others.

Aubry argues that Bishop of Paris Etienne Tempier’s condemnation of 219 propositions in 1277 actually reflected a less extreme, more traditionally Augustinian, stance on omnipotence than the “absolute power” of Hugh of Saint-Cher. I’ve briefly commented on the 1277 condemnation before.

The accepted mid-20th century view was that the condemnation was prompted by the emergence of a trend of “Latin Averroism”, of which Siger of Brabant and Boethius of Dacia were supposed to have been the leading representatives. The translations of Averroes’ commentaries on Aristotle from the Arabic were largely responsible for the rise of Latin Aristotelianisms, but closer scholarship has shown that even the most “Averroist” Latin thinkers considered themselves simply as Aristotelian, and diverged from the more particular views of Averroes on important details. A revised view of the condemnation was that it simply addressed “radical Aristotelianism” — a wholehearted embrace of Aristotle and various Arabic philosophers that was deemed to be in conflict with Christianity.

Alain de Libera has emphasized, however, that what the condemnation addressed was not merely doctrinal or academic matters, but the first social emergence of “intellectuals” in Europe, along with the idea of an ethical Aristotelianism as a way of life. While some authors have seen this as an essentially secular development and as a direct challenge to Christianity, de Libera, Kurt Flasch, and Burkhard Mojsisch have made the picture much more complicated by documenting on the one hand how this development was continued by the German students of Albert the Great, and on the other that the trend of Rhenish mysticism that included the great Meister Eckhart developed out of German Albertism.

The condemned propositions themselves are quite diverse — from praise of philosophy, reason, and this-worldly ethics to general questioning of authority; to assertion of various limits on God’s power; to Aristotelian emphasis on the importance of “secondary” causes; to theses on the characteristics of neoplatonic separate intellects; to expressions of astrological determinism; to rejection of specific points of accepted Christian doctrine. It is unlikely that any single person adhered to them all; certainly the German Albertist Dominicans whom de Libera, Flasch, and Mojsisch have associated with the broader trend addressed by the condemnation would have not have endorsed the rejection of points of common doctrine.

Those who have seen a theological-political confrontation between Augustinianism and Aristotelianism in the condemnation are not wrong, but it is more complicated than that. The Albertists did not see themselves as opposed to Augustine.

Scholars have debated whether any of the condemned propositions were intended to target Thomas Aquinas. Shortly after the condemnation, Bishop Tempier in fact attempted a move against the teaching of the not-yet-canonized Aquinas, which was thwarted in part by the efforts of Albert the Great, who traveled back to Paris to defend the reputation of his recently deceased student. In between, Tempier succeeded in getting the theologian Giles of Rome reprimanded, although Giles was allowed to resume teaching shortly thereafter and did not much change his arguments. Giles was himself the author of a treatise on the “errors of the philosophers”, but this did not prevent him from making use of philosophical arguments in his theology. Theology during this time generally became far more involved with philosophical questions than it had been.

Albert the Great, who along with Roger Bacon was the first European to lecture on the main body of Aristotle’s works after they were translated from the Arabic, developed a style in which he would alternately say “now I speak as a philosopher” and then “now I speak as a theologian”. This was in contrast to Aquinas, who preferred to emphasize the unity of truth. Around the time of Tempier’s condemnation, unnamed “Averroists” were accused of holding that Christianity and “philosophy” contradicted one another but were somehow both true. Scholars have generally concluded that no one literally held such a view, but it strikes me that it might have originated as a hostile caricature of Albert.

Peter Abelard

Peter Abelard is widely regarded as the greatest philosopher and theologian of 12th century Europe. He flourished right before the great influx of translations to Latin from Arabic and Hebrew.

For Abelard, common names refer collectively and directly to many individual things, and there are no separate universal things apart from individual things. But in addition to reference, words have signification, or practical informational content.

The signification of sentences, moreover, cannot be reduced to the signification of the nouns and verbs that make them up. Sentences convey irreducible judgments (dicta) about how things are. Abelard has been said to hold an adverbial view of thought.

He opposed two simplified views of understanding commonly attributed to Aristotle in the tradition: that the mind literally takes on the same form that it apprehends, and that images in the mind resemble the things it apprehends.

Abelard endured persecution for opposing the proto-fundamentalist view of Bernard of Clairvaux that sentences about the faith have a “plain meaning” that is beyond question. He also openly acknowledged that Church authorities contradicted one another on numerous points. At the same time, he is said to have rejected views he attributed to his teacher Roscelin that human reason can explain everything; that we should not accept anything that cannot be explained by reason; and that authority has no rational force.

Abelard reportedly held that the agent’s intention alone determines the moral worth of an action, and that obedience to God’s will consists in applying the Golden Rule (“Do unto others as you would have them do unto you”). Only God has the right to morally judge others. Ethics is not a matter of acting in conformity to law. Nonetheless, human law may legitimately disregard good intentions in punishing actions that had genuinely bad consequences, as a lesson to others.

In Genèse du dieu souverain, Gwenaëlle Aubry says Abelard devoted considerable energy to combatting the notion of a “tyrant God”, citing Daniel’s confrontation with the neo-Babylonian tyrant Nebuchadnezzar. Here he seems to me to anticipate Leibniz in connecting theological voluntarism with tyranny. According to Aubry, Abelard argued that “God, if He is at once rational and good, can only choose the good. Further, a God who did not will and do all the good that He could would be not good but jealous. Therefore, God wills and does all the good that he can, and cannot do anything other than what He does do” (p. 123, my translation). “The essential point that separates Abelard from Augustine… is in effect the following…. it is not sufficient to say that divine action is governed by reason and by the good, rather it is also necessary to affirm that human reason can reason about that reason and that good” (ibid). Here again, on this account Abelard seems to anticipate Leibniz.

According to Aubry, Abelard quotes Augustine saying God is omnipotent “because He can do what He wills….[God] is all-powerful, not because He can do all, but because He can do all that he wills” (p. 124, brackets in original). From this Abelard argues that “It is necessary to say not that God could have done something but did not will to do it, but rather that what he does not will, he can in no way do. The scope of power is indeed not more extended than that of divine will…. [I]n God, power and will are united in such a way that where will is lacking, power is also lacking” (p. 125).

“In [Abelard’s] Theologia Christiana, omnipotence is defined as that for which the will suffices by itself to do all that needs to be done. Omnipotence is thus characterized not by an excess over its effects but by an adequation to them. Not that which is capable of more things than it does is omnipotent, but that which has the power sufficient to what it wills to do” (p. 126).

According to Aubry, Abelard insists on the immutability of divine power and action. Augustine too emphasized the eternity of God, which also implies immutability. But in general he treats the human mind as an image of God, whereas Aubry says Abelard warns against thinking about God’s power in terms of human power. In the works I am familiar with, Augustine treats human will as a power of choice. Is divine will a power of choice too for Augustine, or is it the definite will Aubry suggests Abelard implies it is? I don’t currently know the answer.

Is there any way that power of choice could even have meaning for a genuinely eternal being? It has always seemed to me that choice implies temporal conditions that are incompatible with eternity.

Aubry says that referring to Plato’s Timaeus (a fragment of which was the only text of Plato available in Latin at the time), Abelard distances divine power from the creation from nothing with which it is strongly associated in Augustine, in order to associate it essentially with reason. According to Aubry, Abelard says this is not only the best of all possible worlds, but the only possible world, whereas Augustine says this world could be changed by divine will. Aubry relates this to the excess of divine power over divine will in Augustine.

She makes the Platonic-sounding point that Abelard in Theologia Christiana says not that God is by himself the good, but rather that the good is that which one calls God…. In this way, theology is subsumed by ethics rather than ethics by theology” (p. 130). Aubry also says Abelard transposes the principle of non-contradiction, the principle of excluded middle, and the principle of sufficient reason from the realm of ontology to that of axiology or values.

In both Theologia Christiana and Theologia Scholarium, Abelard raises the question, “Could God do more or better than He does, or again not do what he does?” (p. 133). He answers no, because to say yes would degrade the goodness of God.

Nature and Justice in Augustine

“But if the miracle is not thought as violence, if the opposition between violence and nature is suspended, it is because the Augustinian concept of nature considerably weakens the Aristotelian notion of physis. It is because miracle and nature are both referred back to [Augustine’s] concept of seminal reason, and are only distinguished as the inhabitual and the habitual.”

“In effect, just as the miracle can be called an inhabitual order, in the same way, in the final analysis, order is only a miracle to which one is habituated” (Gwenaëlle Aubry, Genèse du dieu souverain, p. 73, my translation). Augustine’s position is rhetorically more moderate and balanced than those of later occasionalists and theological voluntarists; but Aubry’s point is that when pushed, it leads to the same conclusions. She notes that Augustine’s use of “seminal reasons” is quite different from that of the Stoics; in Augustine, they are referred back directly to the creative power of God.

Augustine never calls God’s will arbitrary; on the contrary, he calls it good and just. But once having put the power of God first in the order of explanation — ahead of goodness and justice — he can only save God’s goodness and justice by invoking mystery, which is to renounce the intelligibility of the good.

Power of the One?

Gwenaëlle Aubry calls Aristotle’s god of pure act is “a god without power, but nonetheless not a weak god” (Dieu san la puissance, p. 9, my translation). Pure act has an efficacy in the world that is not that of efficient causality, but rather that of the final causality that is the efficacy of the Aristotelian Good. She intriguingly connects this efficacy with the potentiality in things that is Aristotle’s very different meaning for the same word as “power”.

She builds a contrasting account of how for Plotinus the One — identified with the Platonic Good — is the “power of all”, that is to say the power behind all that is. To be “the power behind all that is” is not to be omnipotent in the sense of Philo and later theologians, but it is still very different from being pure act. Here the first principle of all things is a power, whereas the first principle for Aristotle according to Aubry is a pure end that is not involved with power at all, but is rather an attractor for potentialities. Plotinus wants the end of all things to be a power at the origin of all things.

“Power of” is very different from “power over”, and in Plato and Plotinus it is the Good that is the ultimate power. But according to Aubry, treating the first principle as a power at all set the stage for views that put power first in the order of explanation, ahead of the good.

In Genèse du dieu souverain she says that Augustine explicitly put divine omnipotence before divine goodness in his account of God. We have moved from “the Good is the power of all” to “the Almighty is good”.

Although Leibniz claims most theologians agree with him that God wills things because they are good, and that things are not just good because God wills them so, Aubry claims that affirming omnipotence means putting power first in the order of explanation.

Regardless of even saintly intentions, putting power first in the order of explanation is an inauspicious move for ethics.


As Aristotle might remind us, “love” is said in many ways. Moreover, there are at least four separate Greek words with distinct but overlapping meanings that we translate by “love” — eros, agape, philia, and storge.

Eros most commonly emphasizes passion, sensuality, and attraction. Classical authors often associated it with a kind of mania leading lovers to extreme behavior. Modern authors have generalized it to include desire of all sorts, and Freud in his later work treated it as a sort of life force. Plato in the Symposium and Plotinus in his works on Beauty and Intelligible Beauty saw eros as capable of being sublimated into an uplifting kind of love for ideal or spiritual things. Aristotle poetically gave it a cosmic role, saying that the stars are moved by eros for their apparent axis of rotation. The latter, as cosmic “unmoved mover”, “unmovingly moves” things in this way, by being the object of their eros. (Unmoved moving also has another, purely descriptive sense that is not relevant here; see Moved, Unmoved.)

Agape is the main word for love in the Greek New Testament, emphasizing compassion and charity. It is applied to God’s love for the world, and in the injunction to love our neighbors as ourselves. It is about this kind of love that Augustine said “love, and do as you will”.

Philia is applied by Aristotle to a wide range of ethical and social contexts — a feeling of affection and sympathy between friends, lovers, families, members of a community, people engaged in some common activity. In the Rhetoric, he defines it as wanting what we think is good for someone, not for our own sake but for theirs, and being inclined to act on that insofar as we are capable. It involves an implicit norm of reciprocity in a broad “proportional” sense that applies even when there is some asymmetry in the underlying relationship. Aristotle argues that although a kind of self-sufficiency is also a virtue, doing for others is a greater good. Moreover, he says that the philos (friend or loved one) is for us like another self. This is the Aristotelian root of Hegel’s ethics of mutual recognition. Also, philosophy is philia for wisdom.

According to Wikipedia, storge is familial or domestic love. Modern authors have associated it with long-term commitment and a kind of unconditional support, and with romantic love that has origins in friendship rather than manic attraction.