This paper offers an interpretation of Aristotle’s concepts of dynamis and energeia (commonly translated as potentiality and actuality), and of the thematic progression of Metaphysics IX. I first raise the question of where motion fits in Aristotle’s categories and argue that the locus of motion in the system of categories are the categories of doing and suffering, in which case dynamis and energeia in respect of motion can also be understood as the dynamis and energeia of doing and suffering. Next, (...) I argue that the analogy that Aristotle draws in IX.6 is an analogy between the dynamis and energeia of doing and suffering and the dynamis and energeia of substance. Finally, I try to show that it is this analogy between the kinetic and non-kinetic variants of dynamis and energeia—and not the distinction between end-inclusive and end-exclusive activities—that provides the key to understanding the structure of Metaphysics IX. (shrink)

Establishing Dispositionalism as a viable theory of modality requires the successful fulfilment of two tasks: showing that all modal truths can be derived from truths about actual powers, and offering a suitable metaphysics of powers. These two tasks are intertwined: difficulties in one can affect the chances of success in the other. In this paper, I generalise an objection to Dispositionalism by Jessica Leech and argue that the theory in its present form is ill-suited to account for de re truths (...) about merely possible entities. I argue that such difficulty is rooted in a problem in the metaphysics of powers. In particular, I contend that the well-known tension between two key principle of powers ontology, namely Directedness and Independence has received an unsatisfactory solution so far, and that it is this unsatisfactory solution concerning the status of “unmanifested manifestations” that makes it hard for Dispositionalism to account for mere possibilia. I develop a novel account of the status of unmanifested manifestations and an overall metaphysics of powers which allows to better respond to Leech's objection and handle mere possibilia. The central idea of the proposal is that unmanifested manifestations are akin to mere logical existents, and are best characterised as non-essentially non-located entities. (shrink)

It is commonly assumed that Aristotle's ethical theory shares deep structural similarities with neo-Aristotelian virtue ethics. I argue that this assumption is a mistake, and that Aristotle's ethical theory is both importantly distinct from the theories his work has inspired, and independently compelling. I take neo-Aristotelian virtue ethics to be characterized by two central commitments: (i) virtues of character are defined as traits that reliably promote an agent's own flourishing, and (ii) virtuous actions are defined as the sorts of actions (...) a virtuous agent reliably performs under the relevant circumstances. I argue that neither of these commitments are features of Aristotle's own view, and I sketch an alternative explanation for the relationship between virtue and happiness in the Nicomachean Ethics. Although, on the interpretation I defend, we do not find in Aristotle a distinctive normative theory alongside deontology and consequentialism, what we do find is a way of thinking about how prudential and moral reasons can come to be aligned through a certain conception of practical agency. (shrink)

I examine the reasons Aristotle presents in Physics VIII 8 for denying a crucial assumption of Zeno’s dichotomy paradox: that every motion is composed of sub-motions. Aristotle claims that a unified motion is divisible into motions only in potentiality (δυνάμει). If it were actually divided at some point, the mobile would need to have arrived at and then have departed from this point, and that would require some interval of rest. Commentators have generally found Aristotle’s reasoning unconvincing. Against David Bostock (...) and Richard Sorabji, inter alia, I argue that Aristotle offers a plausible and internally consistent response to Zeno. I defend Aristotle’s reasoning by using his discussion of what to say about the mobile at boundary instants, transitions between change and rest. There Aristotle articulates what I call the Changes are Open, Rests are Closed Rule: what is true of something at a boundary instant is what is true of it over the time of its rest. By contrast, predications true of something over its period of change are not true of the thing at either of the boundary instants of that change. I argue that this rule issues from Aristotle’s general understanding of change, as laid out in Phys. III. It also fits well with Phys. VI, where Aristotle maintains that there is a first boundary instant included in the time of rest, but not a “first in which the mobile began to change.” I then show how this rule underlies Aristotle’s argument that a continuous motion cannot be composed of actual sub-motions. Aristotle distinguishes potential middles, points passed through en route to a terminus, from actual middles. The Changes are Open, Rests are Closed Rule only applies to actual middles, because only they are boundaries of change that the mobile must arrive at and then depart from. On my reading, Aristotle argues that the instant of arrival, the first instant at which the mobile has come to be at the actual middle, cannot belong to the time of the subsequent motion. If it did, the mobile would already be moving towards the next terminus and thus, per Phys. VI 6, would have already left. But it cannot have moved away from the midpoint at the very same moment it has arrived there. This means that the instant of arrival must be separated from the time of departure by an interval of rest. I show how Aristotle’s reasoning applies generally to rule out any continuous reflexive motion or continuous complex rectilinear motion. On my interpretation, however, the argument does not apply to every change of direction. When, as in the case of projectile motion, multiple movers and their relative powers explain why the mobile changes directions, distinct sub-motions are not involved. Aristotle holds that such motions cannot be continuous, not because they involve intervals of rest, but because they involve multiple causes of motion. My interpretation of the Changes are Open, Rests are Closed Rule allows us to make better sense of Aristotle’s argument than any previous interpretation. (shrink)

Despite the language we saw in the previous chapter, which allowed for time apprehension by perception and marking, in Physics iv 14, Aristotle famously argues that time is dependent on nous.

Aristotle's conception of being is dynamic. He believes that a thing is most itself when engaged in its proper activities, governed by its nature. This paper explores this idea by focusing on Metaphysics , a text that continues the investigation of substantial being initiated inMetaphysics Z. Q.1 claims that there are two potentiality-actuality distinctions, one concerned with potentiality in the strict sense, which is involved in change, the other concerned with potentiality in another sense, which he says is more useful (...) for the present project. His present project is the investigation of substantial being, and the relevant potentiality is the potentiality for activity, the full manifestation of what a thing is. I explore Aristotle's two potentiality-actuality distinctions AND argue that the second distinction is modeled on the first, with one crucial modification. Whereas a change is brought about by something other than the object or by the object itself considered as other (as when a doctor cures himself), an activity is brought about byte object itself considered as itself. This single modification yields an important difference: whereas a change leads to a state other than the one an object was previously in, an activity maintains or develops what an object already is. (shrink)

When I raise my arm, what makes it the case that my arm's going up is an instance of my raising my arm? In this paper, I discuss Aristotle's answer to this question. His view, I argue, is that my arm's going up counts as my raising my arm just in case it is an exercise of a certain kind of causal power of mine. I show that this view differs in an interesting way both from the Davidsonian ‘standard causal (...) account’ of action and from accounts put forward by recent critics of Davidson, such as Hornsby, Alvarez and Hyman. (shrink)

In cognitive science, the dynamical systems theory (DST) has recently been advocated as an approach to cognitive modeling that is better suited to the dynamics of cognitive processes than the symbolic/computational approaches are. Often, the differences between DST and the symbolic/computational approach are emphasized. However, alternatively their commonalities can be analyzed and a unifying framework can be sought. In this paper, the possibility of such a unifying perspective on dynamics is analyzed. The analysis covers dynamics in cognitive disciplines, as well (...) as in physics, mathematics and computer science. The unifying perspective warrants the development of integrated approaches covering both DST aspects and symbolic/computational aspects. The concept of a state-determined system, which is based on the assumption that properties of a given state fully determine the properties of future states, lies at the heart of DST. Taking this assumption as a premise, the explanatory problem of dynamics is analyzed in more detail. The analysis of four cases within different disciplines (cognitive science, physics, mathematics, computer science) shows how in history this perspective led to numerous often used concepts within them. In cognitive science, the concepts desire and intention were introduced, and in classical mechanics the concepts momentum, energy and force. Similarly, in mathematics a number of concepts have been developed to formalize the state-determined system assumption [e.g. derivatives (of different orders) of a function, Taylor approximations]. Furthermore, transition systems - a currently popular format for specification of dynamical systems within computer science - can also be interpreted from this perspective. One of the main contributions of the paper is that the case studies provide a unified view on the explanation of dynamics across the chosen disciplines. All approaches to dynamics analyzed in this paper share the state-determined system assumption and the (explicit or implicit) use of anticipatory state properties. Within cognitive science, realism is one of the problems identified for the symbolic/computational approach - i.e. how do internal states described by symbols relate to the real world in a natural manner. As DST is proposed as an alternative to the symbolic/computational approach, a natural question is whether, for DST, realism of the states can be better guaranteed. As a second main contribution, the paper provides an evaluation of DST compared to the symbolic/computational approach, which shows that, in this respect (i.e. for the realism problem), DST does not provide a better solution than the other approaches. This shows that DST and the symbolic/computational approach not only have the state-determined system assumption and the use of anticipatory state properties in common, but also the realism problem. (shrink)

In this paper, I argue that Aristotle was already aware in his earlier texts of the fundamental distinction between motion and activity and of the criterion which structures this contrast. Moreover, I will present textual evidence which suggests that Aristotle’s original concept of ἐνέργεια applies primarily to activities which contain their ends in themselves, and not to motions, which are different from their ends.

Tun und Können erläutert und diskutiert den Gründungstext der Modalontologie: das neunte Buch der Metaphysik des Aristoteles. Aristoteles' Thesen und Argumente werden zum ersten Mal in Gänze mit formalen analytischen Mitteln rekonstruiert und auf ihre Kohärenz und Gültigkeit geprüft. Erstmals verwendet der Autor dazu eine adverbiale Analyse von Ausdrücken des Könnens und des Vermögens als Prädikatmodifikatoren. Das Buch zeigt, dass Aristoteles' Theorie der Vermögen nicht nur eine konsistente, sondern auch eine leistungsfähige Analyse von Dispositionen und Dispositionsprädikaten bietet. -/- Die Neuausgabe (...) wurde vollständig durchgesehen und um weiterführende Anhänge ergänzt. -/- Der Inhalt: Können, Tun und Möglichkeit. Eine Einführung • Die kausale Dimension von Vermögen • Die ontologische Dimension von Vermögen• Eine notwendige Bedingung für Vermögen • Hindernisse und Verwirklichung • Prioritätsfragen • Aristotle’s Theory of Dispositions • Das Problem des Neuen • Planners, Deciders, Performers. (shrink)

In his theory of time Aristotle does not often mention the present time and nowhere gives a detailed account of it. Nonetheless, present time plays an important role in his conception. I primarily argue for the following claims: (1) According to Aristotle there is a perception of motion and there is a perception of time. These combined perceptions can neither occur in the past nor in the future nor in an indivisible now. Thus, there must be a present time. (2) (...) Aristotle acknowledges the passage of time. This passage of time can only be understood as a passing present. And since an indivisible now cannot pass, the passage of time delivers a further argument for the basic assumption of a present time. – For the most part I simply follow Aristotle’s argument in Physics IV 10 and 11. In doing so, I distinguish present time and now in the introductory puzzles, investigate the passing present in the co-perception of change and time, discuss the relation between change and the passage of time as well as the relation between the passing present and the different nows. (shrink)

Aristotle’s most fundamental distinction between changes and other activities is not that ofMetaphysicsΘ.6, between end-exclusive and end-inclusive activities, but one implicit inPhysics3.1’s definition of change, between the activity of something incomplete and the activity of something complete. Notably, only the latter distinction can account for Aristotle’s view, inPhysics3.3, that ‘agency’—effecting change in something, e.g. teaching—does not qualify strictly as a change. This distinction informsDe Anima2.5 and imparts unity to Aristotle’s extended treatment of change inPhysics3.1-3.

In 'Physics' I.7, Aristotle claims that plants and animals are generated from sperma. Since most understood sperma to be an ovum, this claim threatens to undermine the standard view that, for Aristotle, the matter natural beings are generated from persists through their generation. By focusing on Aristotle’s discussion of sperma in the first book of the 'Generation of Animals', I show that, for Aristotle, sperma in the female is surplus blood collected in the uterus and not an ovum. I subsequently (...) argue that, for Aristotle, this blood does persist through the production of the fetus. (shrink)

The main aim of my thesis is to ascertain whether empathy has the required qualities of an emotion. Disagreement is rife regarding the process leading to the arousal of an emotion, which creates uncertainty as to what exactly an emotion is, and how it appears. This is the first issue I tackle in my work, as I concentrate on examining some of the significant cognitive and feeling theories of emotions. My study of these theories outlines their downsides, and I instead (...) propose to retain a hybrid definition that combines the advantages of both families of theories to provide a balanced approach that recognises the importance of both physical changes and cognitions. The focus of my work then moves specifically onto empathy, with the intention of precisely defining this term too, its functioning, as well as the meaning of the expression ‘feeling empathy for someone’. The existing literature on empathy fails to provide a clear understanding of empathy’s classification as an emotion or a skill. My work is original in that I avoid assertions and clearly establish that empathy constitutes an emotion based on the definition of emotion I advance in the first part of my work. (shrink)

Qualifiers such as “insofar as” and “in itself” have always been important ingredients in key philosophical claims. Descartes, for instance, famously argues that insofar as he is a thinker, he is not made of matter, and Kant equally famously argues that we cannot know things in themselves. Neither of these claims is meant to be true without qualification. Descartes is not simply denying that humans consist of matter, and Kant is not simply denying that we know things. Therefore, we cannot (...) even begin to understand such claims without knowing how qualifiers work. Unlike the logic of quantification, however, the logic of qualification is rather underexplored. In this paper, I examine several instances of philosophical uses of qualifiers, taken from Aristotle, Avicenna, Descartes, Kant, and 20th c. action theory. In the light of these examples, I discuss several accounts of how such qualifiers work. (shrink)

It is much debated whether Aristotle’s conception of happiness includes all valuable goods or only intellectual activity of a certain kind . Our analysis of movement and activity yields a number of distinguishing features to which the eulogy for contemplation in EN X, 6-8 is referring. Moreover, good practice has the same ontological features as producing, certainly not a candidate for happiness. Man has many powers that can be actualised in their limit of perfection, but only one is an activity (...) and that is contemplation. So an analysis of the ontological basis of Aristotelian ethics leads to the conclusion that happiness must be understood along the lines of exclusivism. (shrink)

The famous and mysterious fifth century author, who wrote his works known as the Corpus Dionysiacum under the pseudonym of Dionysius the Areopagite, is one of the most controversial characters in the history of philosophy. His thought is well known for the concepts of apophatic and cataphatic theologies and hierarchy, as well as for his understanding of eros, beauty, and deification, which all greatly influenced the Areopagite’s posterity. His system is a successful amalgam of ancient philosophy and Christian doctrines. The (...) aim of this article is to examine one of these concepts, namely beauty, which will help in understanding Dionysius ’ aesthetics in its original terms, as well as in its connections to Neoplatonism. Concretely, the article focuses on the conception of the divine beauty, and is therefore articulated through two sections, which deal with beauty as an attribute of God, and the famous pair of good and beautiful. (shrink)

RésuméDans cet article, j’analyse quelques passages des Commentaires sur laPhysiquede Simplicius, Philopon et Thémistius afin de : 1) démontrer que ces commentateurs interprètent la phrase d’Aristote,Phys. III 1, 200b16-17, comme affirmant que « continu » est un terme définitoire du mouvement ; 2) identifier la raison pour laquelle ils pensent que parler du mouvement naturel revient à dire que le mouvement est continu, et que, par conséquent, quand Aristote évoque le continu dès le début de sa théorie sur le mouvement, (...) il ne fait qu’affirmer quelque chose d’évident ; 3) montrer que si l’analogie selon laquelle « continu » est un terme définitoire du mouvement, tout comme « mouvement » est un terme définitoire de la nature et « infini » un terme définitoire du continu, n’est pas parfaite (en effet « continu » n’apparaît pas explicitement dans la définition du mouvement), ceci est dû à l’impossibilité de subsumer le mouvement sous une catégorie de l’être. Pour appuyer ce dernier point, j’utilise une citation d’Alexandre par Simplicius, et un passage de Philopon. (shrink)

Aristotle’s Naïve Somatism is a re-interpretation of Aristotle’s cognitive psychology in light of certain presuppositions he holds about the living animal body. The living animal body is presumed to be sensitive, and Aristotle grounds his account of cognition in a rudimentary proprioceptive awareness one has of her body. With that presupposed metaphysics under our belts, we are in a position to see that Aristotle in de Anima (cognition chapters at least) has a di erent explanatory aim in view than that (...) which the literature generally imputes to him. He is not explicating what we would call the “mental”—the private, inner realm which some take to be of a di erent kind than the physical—as most take him to be. His explanandum is content acquisition; the explanans is showing how the body becomes like various aspects of objects. Although he famously describes the mind (nous) as unmixed with the body, he is guided by functional constrains—nous cannot be limited or qualified if it is to potentially think all things. Thus, his inquiry into cognition is philosophically limited from a contemporary perspective. Aristotle is not doing philosophy of mind, for he doesn’t seem to find the “mental” philosophically perplexing. (shrink)

When I raise my arm, what makes it the case that my arm's going up is an instance of my raising my arm? In this paper, I discuss Aristotle's answer to this question. His view, I argue, is that my arm's going up counts as my raising my arm just in case it is an exercise of a certain kind of causal power of mine. I show that this view differs in an interesting way both from the Davidsonian ‘standard causal (...) account’ of action and from accounts put forward by recent critics of Davidson, such as Hornsby, Alvarez and Hyman. (shrink)