Résumé Porphyre fait subir dans l’ Isagoge une inflexion platonicienne au système ontologique des Catégories d’Aristote et investit les catégories d’une signification métaphysique. Plusieurs penseurs du haut Moyen âge – les réalistes – ont amplifié et explicité cette métaphysique. La lecture et l’usage ontologiques de l’ Isagoge par Jean Scot Erigène, dans son Periphyseon, est à ce titre un cas d’école. Influencé par le néoplatonisme tardif de Proclus, Jean Scot se sert des outils conceptuels de l’ Isagoge pour élaborer son (...) système philosophique. (shrink)

Le present livre propose l'etude de la constitution, durant le haut Moyen Age latin, d'une position philosophique: le realisme de l'immanence a propos des universaux. Cette position est fondee sur la conviction qu'il existe, dans le monde qui nous entoure, certes des individus particuliers - ce tilleul, cette tortue -, mais aussi des entites universelles. Ces entites n'existent pas separees des individus, mais integralement realisees en eux, sans variation ni degre. Cet engagement philosophique resulte d'une exegese des Categories d'Aristote, reinterpretees (...) selon des philosophemes issus de la pensee de Porphyre. La genealogie de cette position est ici retracee en abordant successivement ses sources tant grecques que latines et ses ancetres patristiques (avant tout Gregoire de Nysse), puis son elaboration conceptuelle durant les premiers siecles du Moyen Age latin jusqu'a la critique qu'en donnera Pierre Abelard, et ce, par l'analyse de l'ontologie des quatre philosophes qui l'ont soutenue: Jean Scot Erigene, Anselme de Canterbury, Odon de Cambrai et Guillaume de Champeaux. Ce parcours permet de dessiner les contours d'un projet philosophique: comprendre, analyser et decrire le monde sensible au moyen des concepts issus de la logique aristotelicienne. (shrink)

Nell'alto medioevo vi erano tre possibilità per il filosofo che volesse difendere l'esistenza degli universali: in primo luogo ante rem, seguendo la linea platonico-agostiniana degli universali trascendenti e questa è la via teologica; in secondo luogo la via post rem, cioè la via del concettualismo, conosciuta oggi come astrattismo, per cui gli universali sono il prodotto dell'astrazione della mente e questa è una via logica; la terza via è quella in re e difende gli universali immanenti che esistono negli universali (...) ed è una risposta ontologica. La seconda via fu difesa da Boezio nel secondo commento a Porfirio. La prima teoria è stata generalmente accettata da tutti i filosofi dell'alto medioevo eccetto Abelardo, mentre la terza via, quella degli universali immanenti, che ha come fonti antiche l'Isagoge di Porfirio e le Categoriae di Aristotele, fu difesa principalmente da quattro autori: Giovanni Scoto Eriugena, Anselmo d'Aosta, Odone di Cambrai e Guglielmo di Champeaux. L'A. prende in esame e confronta le soluzioni di Anselmo di Canterbury e Odone di Cambrai. (shrink)

This chapter analyzes the explanation of resemblance provided by the twelfth-century Latin philosopher Gilbert of Poitiers. As Gilbert holds that everything that exists is particular and rejects immanent universals, he is in need of an explanation for the resemblance of co-specific properties. His solution stems from a complex consideration of exact resemblance, which he calls ‘conformitas,’ based upon a thorough reflection about properties, as for him, only properties and not individuals can be exactly similar. In order to discuss his theory (...) of resemblance, the chapter first offers a reconstruction of the main tenets of Gilbert’s particularist ontology; it argues that Gilbert can adequately be categorized as a trope theorist. Gilbert analyzes the metaphysical constitution of an individual as a set of hierarchically organized co-present tropes, starting from an essential nucleus. For Gilbert, a universal is a collection of properties gathered on the basis of resemblance. At the end of the chapter, the possible role of divine ideas in his explanation of resemblance is discussed. (shrink)

The fourth-century thinker and theologian Gregory of Nyssa was a convinced realist about universals. According to him, there is just one substance man for all the individuals of the species man and this universal substance is completely instantiated by each individual. In two of his treatises – the Ad Ablabium and the Ad Graecos – he draws linguistic consequences from this realist position. This enquiry results in the thesis according to which it is incorrect to use natural kind terms in (...) the plural form, because that would involve stating a plurality of substances, when in fact there is just one substance for all the individuals of a given kind. In consequence, since the substance of all individual human beings is the same, the word ‘man’ can only be used adequately in the singular form. In this contribution, Gregory's reasoning is reconstructed. In the second part of the paper, the posterity of his theory and its endorsement by Theodore Abū Qurrah at the turn of the eighth and ninth centuries are examined. (shrink)

La problématique philosophique d’Erigène – catégories, universaux, individuation – se noue autour de la notion d’ousia, comprise soit comme l’essence générale, genre suprême unique, soit comme substance particulière. En opposition aux Catégories, Jean Scot défend un réalisme radical, concevant l’individuation comme accidentelle et le particulier comme un rassemblement de propriétés universelles. Guillaume de Champeaux reprendra cette position dans sa théorie réaliste dite de l’essence matérielle.

Résumé Cet article a pour but de montrer comment le penseur du IV e siècle Marius Victorinus a utilisé une thèse de la logique aristotélicienne dans son œuvre théologique, plus précisément dans sa démonstration de l’incorrection du concept d’ homoioousion (« de substance semblable ») et dans sa défense de la justesse du concept d’ homoousion (« de substance identique ») pour parler des personnes de la divine Trinité. Marius Victorinus argumente sur la base de la définition que donne Aristote (...) du propre de la qualité, selon laquelle il ne peut y avoir de ressemblance en matière de substance sous peine d’une confusion catégoriale, car la ressemblance appartient exclusivement à la catégorie de la qualité. Un concept postulant une similarité de substance est donc logiquement incorrect. Cette critique a le mérite de mettre en lumière la difficulté, au moins exégétique, à se réclamer des Catégories d’Aristote pour développer une théorie des universaux basée sur la ressemblance et non l’identité. (shrink)

Le penseur byzantin du neuvième siècle Photius a consacré plusieurs courts traités à la question catégoriale, commentant neuf des dix catégories aristotéliciennes une à une. Il est aussi revenu dans deux courts textes – les Amphilochia 27 et 230 – sur la question de la prédication. Il s’interroge dans ces deux traités sur le mode de prédication propre aux termes « homme » et « humanité », analysant notamment le référent de ces termes. Ces réflexions contiennent plusieurs thèses significatives de (...) son ontologie particulariste. (shrink)

In his major work, the Periphyseon, the ninth century Latin philosopher John Scottus Eriugena gives, with the help of what he calls "dialectic", a rational analysis of reality. According to him, dialectic is a science which pertains both to language and reality. Eriugena grounds this position in a realist ontological exegesis of the Aristotelian categories, which are conceived as categories of being. His interpretation tends to transform logical patterns, such as Porphyry's Tree or the doctrine of the categories, into a (...) structure which is both ontological and logical, and to use them as tools for the analysis of the sensible world. The combination of dialectic interpreted as a science of being, capable of expressing truths about the sensible world as well as about discourse, with an ontological interpretation of logical concepts allows Eriugena to develop his metaphysical theory, a strong realism. Eriugena not only supports a theological realism, but also, and principally, an ontological realism, the assertion of the immanent existence of forms. Eriugena claims that genera and species really subsist in the individuals: they are completely and simultaneously present in each of the entities which belong to them. (shrink)

The question of the simultaneity of relatives is one of the most debated aspects of Aristotle’s theory of relational properties. Are they exceptions to the rules of co-introduction and co-suppression for a pair of relatives? The present article studies a particular chapter of the long history of this problem, the contribution of three Byzantine thinkers of the ninth century. Their discussion is embedded in the complex phenomenon of the Iconoclast crisis. For reinvigorating their discourse on icons, these iconophiles thinkers deployed (...) Aristotelian logic, notably by treating the model and the image as Aristotelian relatives. This move implies tackling the issue of the simultaneity of relatives. Metrophanes, Nicephorus and Theodore solved it in three different ways which the present article reconstructs. (shrink)

Résumé Porphyre fait subir dans l’ Isagoge une inflexion platonicienne au système ontologique des Catégories d’Aristote et investit les catégories d’une signification métaphysique. Plusieurs penseurs du haut Moyen âge – les réalistes – ont amplifié et explicité cette métaphysique. La lecture et l’usage ontologiques de l’ Isagoge par Jean Scot Erigène, dans son Periphyseon, est à ce titre un cas d’école. Influencé par le néoplatonisme tardif de Proclus, Jean Scot se sert des outils conceptuels de l’ Isagoge pour élaborer son (...) système philosophique. (shrink)

Kant a consacre les dernieres annees de sa vie a l'ecriture d'un ample texte intitule Passage des principes metaphysiques de la science de la nature a la physique et qui, acheve, aurait ete la clef de voute de sa philosophie critique. Occupe depuis la Critique de la raison pure par la question de la liberte morale au sein d'un monde domine par la science et sa vision mecaniciste de la nature, Kant cherche dans l'Opus postumum a mettre au jour une (...) nouvelle fois l'identite fondamentale entre la raison theorique et la raison pratique, en appliquant alors a la nature un transcendantalisme materiel. Selon lui, l'identite des deux raisons releve en derniere instance d'une raison infinie divien qui sous-tend le systeme de la raison dans son ensemble. (shrink)

In Minimal Rationality, Christopher Cherniak boldly challenges the myth of Man the the Rational Animal and the central role that the "perfectly rational...

The coherence objection to the doctrine of the Incarnation maintains that it is impossible for one individual to have both the attributes of God and the attributes of a human being. This article examines Thomas Aquinas’s answer to this objection. I challenge the dominant, mereological interpretation of Aquinas’s position and, in light of this challenge, develop and defend a new alternative interpretation of Aquinas’s response to this important objection to Christian doctrine.

Assertion is the central vehicle for the sharing of knowledge. Whether knowledge is shared successfully often depends on the quality of assertions: good assertions lead to successful knowledge sharing, while bad ones don't. In Sharing Knowledge, Christoph Kelp and Mona Simion investigate the relation between knowledge sharing and assertion, and develop an account of what it is to assert well. More specifically, they argue that the function of assertion is to share knowledge with others. It is this function that supports (...) a central norm of assertion according to which a good assertion is one that has the disposition to generate knowledge in others. The book uses this functionalist approach to motivate further norms of assertion on both the speaker and the hearer side and investigates ramifications of this view for other questions about assertion. (shrink)

The ethics of autonomous cars and automated driving have been a subject of discussion in research for a number of years :28–58, 2016). As levels of automation progress, with partially automated driving already becoming standard in new cars from a number of manufacturers, the question of ethical and legal standards becomes virulent. For exam-ple, while automated and autonomous cars, being equipped with appropriate detection sensors, processors, and intelligent mapping material, have a chance of being much safer than human-driven cars in (...) many regards, situations will arise in which accidents cannot be completely avoided. Such situations will have to be dealt with when programming the software of these vehicles. In several instances, internationally, regulations have been passed, based on legal considerations of road safety, mostly. However, to date, there have been few, if any, cases of a broader ethics code for autonomous or automated driving preceding actual regulation and being based on a broadly composed ethics committee of independent experts. In July 2016, the German Federal Minister of Transport and Digital Infrastructure, Alexander Dobrindt, appointed a national ethics committee for automated and connected driving, which began its work in September 2016. In June 2017, this committee presented a code of ethics which was published in German and in English. It consists of 20 ethical guidelines. Having been a member of this committee, I will present the main ethical topics of these guidelines and the discussions that lay behind them. (shrink)

In this essay, I argue that a proper understanding of the historicity of love requires an appreciation of the irreplaceability of the beloved. I do this through a consideration of ideas that were first put forward by Robert Kraut in “Love De Re” (1986). I also evaluate Amelie Rorty's criticisms of Kraut's thesis in “The Historicity of Psychological Attitudes: Love is Not Love Which Alters Not When It Alteration Finds” (1986). I argue that Rorty fundamentally misunderstands Kraut's Kripkean analogy, and (...) I go on to criticize her claim that concern over the proper object of love should be best understood as a concern over constancy. This leads me to an elaboration of the distinct senses in which love can be seen as historical. I end with a further defense of the irreplaceability of the beloved and a discussion of the relevance of recent debates over the importance of personal identity for an adequate account of the historical dimension of love. (shrink)

This handbook article gives a critical overview of recent discussions of epistemic authority. It favors an account that brings into balance the dictates of rational deference with the ideals of intellectual self-governance. A plausible starting point is the conjecture that neither should rational deference to authorities collapse into total epistemic submission, nor the ideal of mature intellectual self-governance be conflated with (illusions of) epistemic autarky.

This paper is built around a single, simple idea. It is widely agreed that there is a distinctive kind of awareness each of us has of his own bodily actions. This action-awareness is different from any perceptual awareness a subject may have of his own actions; it can exist in the absence of such perceptual awareness. The single, simple idea around which this paper is built is that the distinctive awareness that subjects have of their own mental actions is a (...) form of action-awareness. Subjects’ awareness of their own mental actions is a species of the same genus that also includes the distinctive awareness of bodily actions. More specifically, I claim. (shrink)

Christopher Hookway presents a series of essays on the work of Charles Sanders Peirce (1839-1913), the 'founder of pragmatism' and one of the most important and original American philosophers.

How does good combine with bad? Most creatures are neither so blessed as to only enjoy good nor so cursed as to only suffer bad. Rather, the good and bad they receive throughout their lives combine to produce their overall quality of life. But it’s not just whole lives that have combined good and bad. Many stretches within contain both positive and negative occurrences whose value is joined to form the overall quality of that span of time. In a single (...) morning someone might wake up, brush their teeth, stub their toe groggily lumbering down the stairs, and have a sip of coffee that’s tasty but so hot they burn their tongue. These events are good and bad for them to various degrees, and their value comes together to form an overall value for them of that morning. A single moment, even, can have combined value from distinct pockets of good and bad that occur simultaneously. The tastiness of the coffee is good, but the pain of the heat is bad. They combine to form an overall value of the sipping moment – negative if the pain outweighed the flavor. Thus, wellbeing and illbeing combine. But how? How can someone rightly chastise themselves for sipping the overly hot coffee when it was, in fact, good because it was tasty? To pose the question starkly, a life can be bad, even so bad to not be worth living, and yet it can have many instances of good, where these goods are, in themselves, pure of any negativity. But how can good make something bad? (shrink)

A number of cases involving self-locating beliefs have been discussed in the Bayesian literature. I suggest that many of these cases, such as the sleeping beauty case, are entangled with issues that are independent of self-locating beliefs per se. In light of this, I propose a division of labor: we should address each of these issues separately before we try to provide a comprehensive account of belief updating. By way of example, I sketch some ways of extending Bayesianism in order (...) to accommodate these issues. Then, putting these other issues aside, I sketch some ways of extending Bayesianism in order to accommodate self-locating beliefs. Finally, I propose a constraint on updating rules, the "Learning Principle", which rules out certain kinds of troubling belief changes, and I use this principle to assess some of the available options. (shrink)

Forms and Concepts is the first comprehensive study of the central role of concepts and concept acquisition in the Platonic tradition. It sets up a stimulating dialogue between Plato s innatist approach and Aristotle s much more empirical response. The primary aim is to analyze and assess the strategies with which Platonists responded to Aristotle s (and Alexander of Aphrodisias ) rival theory. The monograph culminates in a careful reconstruction of the elaborate attempt undertaken by the Neoplatonist Proclus (6th century (...) AD) to devise a systematic Platonic theory of concept acquisition.". (shrink)

In this paper, I aim to develop a novel virtue reliabilist account of justified belief, which incorporates insights from both process reliabilism and extant versions of virtue reliabilism. Like extant virtue reliabilist accounts of justi- fied belief, the proposed view takes it that justified belief is a kind of competent performance and that competent performances require reliable agent abilities. However, unlike extant versions of virtue reliabilism, the view takes abilities to essentially involve reliable processes. In this way, the proposed takes (...) a leaf from process reliabilism. Finally, I will provide reason to believe that the view compares favourably with both extant versions of virtue reliabilism and process reliabilism. In particular, I will show that in taking abilities to essentially involve reliable processes, the view has an edge over extant versions of virtue reliabilism. Moreover, I will argue that the proposed view can either solve or defuse a number of classical problems of process reliabilism, including the new evil demon problem, the problem of clairvoyant cases and the generality problem. (shrink)

Essentialists claim that at least some individuals or kinds have essences. This raises an important but little-discussed question: how do we come to know what the essence of something is? This paper examines Aristotle’s answer to this question. One influential interpretation (viz., the Explanationist Interpretation) is carefully expounded, criticized, and then refined. Particular attention is given to what Aristotle says about this issue in DA I.1, APo II.2, and APo II.8. It is argued that the epistemological claim put forward in (...) DA I.1 differs from that put forward in APo II.2 and II.8, contrary to what has been claimed by Explanationists, and that each of these distinct epistemological claims rests on a distinct non-epistemological thesis about essence. Consequently, an ‘Enriched Explanationist Interpretation’ is developed which takes into account both of the aforementioned elements in Aristotle’s epistemology of essence. The paper concludes by highlighting an insight the preceding exegetical discussion offers to contemporary essentialists seeking to explain how we come to know what something’s essence is. (shrink)

"Throughout history, some books have changed the world. They have transformed the way we see ourselves - and each other. They have inspired debate, dissent, war and revolution. They have enlightened, outraged, provoked and comforted. They have enriched lives - and destroyed them. Now Penguin brings you the works of the great thinkers, pioneers, radicals and visionaries whose ideas shook civilization and helped make us who we are. Plato's retelling of the discourses between Socrates and his friends on such subjects (...) as love and desire, truth and illusion, spiritual transcendence and the qualities of a good ruler, profoundly affected the ways in which we view human relationships, society and leadership - and shaped the whole tradition of Western philosophy."--Publisher's website. (shrink)

A critical interrogation of elements of Hobbes's political and natural philosophy and its capacity to enrich our understanding of the natural of democratic life.

This book offers a broad-based critical survey of recent anti-realist arguments in the philosophy of science, cultural theory, hermeneutics, the sociology of knowledge and the interpretation of quantum-mechanics.

An epistemic agent A is a false epistemic authority for others iff they falsely believe A to be in a position to help them accomplish their epistemic ends. A major divide exists between what I call "epistemic quacks", who falsely believe themselves to be relevantly competent, and "epistemic charlatans", i.e., false authorities who believe or even know that they are incompetent. Both types of false authority do not cover what Lackey (2021) calls "predatory experts": experts who systematically misuse their social-epistemic (...) status as a cover for predatory behavior. Qua experts, predatory experts are competent and thus could (and maybe sometimes do) help their clients. But should we count them as genuine epistemic authorities? No, I argue, they are false epistemic authorities because, in addition to their practical and moral misconduct, such experts systematically deceive their clients, thereby thwarting the clients’ epistemic ends. (shrink)