Twentieth Century philosophical thought has expressed itself for the most part through two great Movements: the phenomenological and the analytical. Each movement originated in reaction against idealistic—or at least anti-realistic—views of "the world". And each has collapsed back into an idealism not different in effect from that which it initially rejected. Both movements began with an appeal to meanings or concepts, regarded as objective realities capable of entering the flow of experience without loss of their objective status or of their (...) power to reveal to us an objective world as it would be if there were no subjective apprehensions of it. Both movements ended with a surrender of the objectivity of meanings and concepts in this strong sense, coming to treat them as at most more-or-less shareable components of a somehow communalized experience, but in any case incapable of revealing how things are irrespective of actual human experience. For the old Egocentric Predicament, with its "ideas" etc., is substituted a Lingocentric or Histrocentric Predicament of "language" and its elements. Hilary Putnam speaks for the current consensus: 'Internal realism says that we don't know what we are talking about when we talk about "things in themselves"' (The Many Faces of Realism , p. 36 ). (shrink)

"Psychiatry and Philosophy of Science" explores conceptual issues in psychiatry from the perspective of analytic philosophy of science. Through an examination of those features of psychiatry that distinguish it from other sciences - for example, its contested subject matter, its particular modes of explanation, its multiple different theoretical frameworks, and its research links with big business - Rachel Cooper explores some of the many conceptual, metaphysical and epistemological issues that arise in psychiatry. She shows how these pose interesting (...) challenges for the philosopher of science while also showing how ideas from the philosophy of science can help to solve conceptual problems within psychiatry. Cooper's discussion ranges over such topics as the nature of mental illnesses, the treatment decisions and diagnostic categories of psychiatry, the case-history as a form of explanation, how psychiatry might be value-laden, the claim that psychiatry is a multi-paradigm science, the distortion of psychiatric research by pharmaceutical industries, as well as engaging with the fundamental question whether the mind is reducible to something at the physical level. "Psychiatry and Philosophy of Science" demonstrates that cross-disciplinary contact between philosophy of science and psychiatry can be immensely productive for both subjects and it will be required reading for mental health professionals and philosophers alike. (shrink)

"Psychiatry and Philosophy of Science" explores conceptual issues in psychiatry from the perspective of analytic philosophy of science. Through an examination of those features of psychiatry that distinguish it from other sciences - for example, its contested subject matter, its particular modes of explanation, its multiple different theoretical frameworks, and its research links with big business - Rachel Cooper explores some of the many conceptual, metaphysical and epistemological issues that arise in psychiatry. She shows how these pose interesting (...) challenges for the philosopher of science while also showing how ideas from the philosophy of science can help to solve conceptual problems within psychiatry. Cooper's discussion ranges over such topics as the nature of mental illnesses, the treatment decisions and diagnostic categories of psychiatry, the case-history as a form of explanation, how psychiatry might be value-laden, the claim that psychiatry is a multi-paradigm science, the distortion of psychiatric research by pharmaceutical industries, as well as engaging with the fundamental question whether the mind is reducible to something at the physical level. "Psychiatry and Philosophy of Science" demonstrates that cross-disciplinary contact between philosophy of science and psychiatry can be immensely productive for both subjects and it will be required reading for mental health professionals and philosophers alike. (shrink)

The contributions gathered here demonstrate how categorical ontology can provide a basis for linking three important basic sciences: mathematics, physics, and philosophy. Category theory is a new formal ontology that shifts the main focus from objects to processes. The book approaches formal ontology in the original sense put forward by the philosopher Edmund Husserl, namely as a science that deals with entities that can be exemplified in all spheres and domains of reality. It is a dynamic, processual, and non-substantial (...) ontology in which all entities can be treated as transformations, and in which objects are merely the sources and aims of these transformations. Thus, in a rather surprising way, when employed as a formal ontology, category theory can unite seemingly disparate disciplines in contemporary science and the humanities, such as physics, mathematics and philosophy, but also computer and complex systems science. (shrink)

I provide a critical commentary regarding the attitude of the logician and the philosopher towards the physicist and physics. The commentary is intended to showcase how a general change in attitude towards making scientific inquiries can be beneficial for science as a whole. However, such a change can come at the cost of looking beyond the categories of the disciplines of logic, philosophy and physics. It is through self-inquiry that such a change is possible, along with the realization (...) of the essence of the middle that is otherwise excluded by choice. The logician, who generally holds a reverential attitude towards the physicist, can then actively contribute to the betterment of physics by improving the language through which the physicist expresses his experience. The philosopher, who otherwise chooses to follow the advancement of physics and gets stuck in the trap of sophistication of language, can then be of guidance to the physicist on intellectual grounds by having the physicist’s experience himself. In course of this commentary, I provide a glimpse of how a truthful conversion of verbal statements to physico-mathematical expressions unravels the hitherto unrealized connection between Heisenberg uncertainty relation and Cauchy’s definition of derivative that is used in physics. The commentary can be an essential reading if the reader is willing to look beyond the categories of logic, philosophy and physics by being ‘nobody’. (shrink)

The book investigates the relationship between the economic and political writings of four seminal authors: Adam Smith, Karl Marx, Joseph A. Schumpeter, and..

The categories of health and disease/illness are conceptualized from the perspective of the philosophy of medicine. Philosophical contradictions are revealed, which, fueling the debate between naturalism and normativism, prevent biomedicine from developing a single satisfactory understanding of these categories. The theoretical and practical consequences of such biomedicine features as pathocentrism, identification of health with complete well-being, dichotomy of health and disease in the absence of a clear criterion for their differentiation are analyzed. The role of humanistic approaches (...) to the medicine rehumanization is investigated with a focus on their balanced view of health and disease/illness, attentive to the fundamental vulnerability of human nature. (shrink)

The category of« organism » has an ambiguous status: scientific or philosophical? In any case, it has long served as a kind of scientific « bolstering » for a philosophical train of argument which seeks to refute the « mechanistic » or « reductionist » trend, which is seen as dominant since the 17th century, whether in the case of Stahlian animism, Leibnizian monadology, the neo-vitalism of Hans Driesch, or, lastly, of the « phenomenology of organic life » in the (...) 20th century, with authors such as Goldstein, Straws, and Weizsäcker, whose influence on Merleau-Ponty but also Canguilhem is obvious. The aim of this article is both to bring to light the sedimentation of this category and to give a critical evaluation of it, in other words, to sec in what way it might still be useful once one has eliminated the possibility of any « organicist » excesses. I suggest a notion of organism as an instrumental fiction. (shrink)

Philosophy for children is an educational movement that includes diverse goals that are not always clearly articulated by theorists and practitioners. In order to navigate the multitude of aims found in the philosophy for children literature I propose distinguishing between the following categories of goals: aims of education; educational goals of philosophy for children ; goals of a community of philosophical inquiry ; goals of the facilitator; and goals of the children. The definitions of these various (...) types are given along with some examples of how the distinctions between them can be of aid in understanding the approaches, criticisms, and practice of philosophy for children. (shrink)

The 18th-century Scottish ‘common sense’ philosopher Thomas Reid argued that perception can be distinguished on several dimensions from other categories of experience, such as sensation, illusion, hallucination, mental images, and what he called ‘fancy.’ We extend his approach to eleven mental categories, and discuss how these distinctions, often ignored in the empirical literature, bear on current research. We also score each category on five properties (ones abstracted from Reid) to form a 5 × 11 matrix, and thus can (...) generate statistical measures of their mutual dependencies, a procedure that may have general interest as illustrating what we can call ‘computational philosophy.’. (shrink)

The category of the Ethico-Aesthetics, introduced by Søren Kierkegaard, was applied to the study of Byzantine Philosophy by the Greek philoso­pher and theologian Nikolaos Matsoukas. Matsoukas vehe­mently rejected the identification of Byzantine philosophy with a strict Christian moralism. Rather, he viewed it as an ethos which did not lead the ascetics to display Manichean contempt for the body. It was thus a kind of ‘mild asceticism’. This ethical acceptance of the body turns against Neoplatonic speculation and cultivates the (...) habitus that leads to artistic creativity. Byzantine philosophy is thus situated at the midpoint between nominalism and realism, but standing against the realism of the archetypal ideas. The paper concludes with some considerations on the pragmatics of Byzantine philosophy in a Christian world. (shrink)

The concept that peope have of themselves as a 'person' is one of the most intimate notions that they hold. Yet the way in which the category of the person is conceived varies over time and space. In this volume, anthropologists, philosophers, and historians examine the notion of the person in different cultures, past and present. Taking as their starting point a lecture on the person as a category of the human mind, given by Marcel Mauss in 1938, the contributors (...) critically assess Mauss's speculation that ntions of the person, rather than being primarily philosophical or psychological, have a complex social and ideological origin. Discussing societies ranging from ancient Greece, India, and China to modern Africa and Papua New Guinea, they provide fascinating descriptions of how these different cultures define the person. But they also raise deeper theoretical issues: What is universally constant and what is culturally variable in people's thinking about the person? How can these variations be explained? Has there been a general progressive development toward the modern Western view of the person? What is distinctive about this? How do one's notions of the person inform one's ability to comprehend alternative formulations? These questions are of compelling interest for a wide range of anthropologists, philosophers, historians, psychologists, sociologists, orientalists, and classicists. The book will appeal to any reader concerned with understanding one of the most fundamental aspects of human existence. (shrink)

This book presents the Proceedings of the Second International Colloquium on Cognitive Science, held at San Sebastian in May, 1991, to discuss from an interdisciplinary point of view topics which are at the intersection of philosophy and cognitive science. With a total of eleven papers from leading scholars in the field, the volume provides many different theoretical approaches to the study of Categories, Consciousness and Reasoning. The book is addressed to researchers, specialists, advanced students and scholars in the (...) fields of epistemology, philosophy of mind, psychology, semantics, logic and artificial intelligence. (shrink)

Rocco Gangle addresses the methodological questions raised by a commitment to immanence in terms of how diagrams may be used both as tools and as objects of philosophical investigation. Gangle integrates insights from Spinoza, Pierce and Deleuze in conjunction with the formal operations of category theory.

The notion of 'natural kinds' has been central to contemporary discussions of metaphysics and philosophy of science. Although explicitly articulated by nineteenth-century philosophers like Mill, Whewell and Venn, it has a much older history dating back to Plato and Aristotle. In recent years, essentialism has been the dominant account of natural kinds among philosophers, but the essentialist view has encountered resistance, especially among naturalist metaphysicians and philosophers of science. Informed by detailed examination of classification in the natural and social (...) sciences, this book argues against essentialism and for a naturalist account of natural kinds. By looking at case studies drawn from diverse scientific disciplines, from fluid mechanics to virology and polymer science to psychiatry, the author argues that natural kinds are nodes in causal networks. On the basis of this account, he maintains that there can be natural kinds in the social sciences as well as the natural sciences. (shrink)

This article investigates how late nineteenth century Japanese philosophers responded to large categories of ideas imported from the West and for which there were no Japanese equivalents; mainly "science," "religion," and "philosophy." Discussions on whether Buddhism or Confucianism would fall under "philosophy" or "religion" accompanied a re-categorization of ideas. Some philosophers made elaborate reconstructions of Buddhism and Confucianism as modern philosophies. However, over time, Japanese categorizations of Buddhism and Confucianism shifted from "philosophy" (tetsugaku) to "thought" (shisō). (...) Investigating Meiji philosophy from the perspective of this problem of categories makes it is possible to reevaluate it on its own terms. (shrink)

Plessner’s philosophical anthropology is presented as a non-naturalistic philosophy of nature. Such a position is attractive and indispensable, for instance, to all debates concerning personhood and human dignity. Plessner’s work rests on a conception of philosophy that distinguishes without exception the contents of possible experiences from their conditions of possibility. Thus, Plessner’s anthropology is a theory of categorial contents, but not in the aprioric sense according to which they would be assumed to be prior to all experience. Plessner (...) avoids such a misconception by structuring his philosophy in a reflexive way. Therefore his basic philosophical category or idea—eccentric positionality—doesn’t mean a property of human or any natural beings, but the categorial frame called personhood which is in use when we identify empirical properties of humans. The challenge in understanding personhood as conceptually independent of empirical properties consists in distinguishing between the contingency of personhood and arbitrariness. (shrink)

The concept of an ontological category is central to metaphysics. Metaphysicians argue about which category of existence an object should be assigned to, whether one category can be reduced to another one, or whether there might be different equally adequate systems of categorization. Answers to these questions presuppose a clear understanding of what precisely an ontological category is, and Jan Westerhoff now provides the first in-depth analysis. After examining a variety of attempted definitions, he proceeds to argue for a new (...) understanding of ontological categories, according to which they are systematizations of our knowledge of the world rather than essential characteristics of the world itself. Metaphysicians will find his work highly stimulating. (shrink)

ABSTRACTThis essay tracks Heidegger’s thought from 1919 forwards to the decisive years of his political engagement, on behalf of the Nazi movement. Part 1 tracks how the question concerning Being devolves into the implicitly identitarian question of who “we” are. Part 2 addresses the “existential” of Befindlichkeit which Heidegger in Sein und Zeit positions as prior to understanding, and examines his esoteric mode of writing as the means to cultivate a prerational Stimmung. Part 3 examines Heidegger’s response to his 1929–1930 (...) questions of “What mood must we awaken?... Who are we, then?” in the decisive years of the Gleichchaltung, showing how Heidegger’s thinking elevates to ontological primacy a discriminatory and identitarian decision concerning who “we” are as the German volk. Part 4 examines in this light the Heideggerian “end of philosophy” in what the Black Notebooks talks of in terms of a “metapolitics ‘of’ the historical people”. (shrink)

The proposed book presents an overview of select theories in the classical Vaiśeṣika system of Indian philosophy, such as the concept of categories, creation and existence, atomic theory, consciousness and cognition. It also expounds in detail the concept of dharma, the idea of the highest good and expert testimony as a valid means of knowing in Vaiśeṣika thought. Some of the major themes discussed are the religious inclination of Vaiśeṣika thought towards Pasupata Saivism, the affiliation of the Vaiśeṣika (...) System to the basic foundations of Indian philosophical thought, namely Veda and Yoga, and their insights into science, hermeneutics and metaphysics. In addition, this book includes recent Sanskrit commentaries on key Vaiśeṣika texts and provides a glimpse of Vaiśeṣika studies across the world. Overall, this book enunciates the Vaiśeṣika view from original sources and is an important work for Vaiśeṣika studies in current times for serious students as well as researchers.. (shrink)

In this article, we analyse how researchers use the categories of race and ethnicity with reference to genetics and genomics. We show that there is still considerable conceptual “messiness” (despite the wide-ranging and popular debate on the subject) when it comes to the use of ethnoracial categories in genetics and genomics that among other things makes it difficult to properly compare and interpret research using ethnoracial categories, as well as draw conclusions from them. Finally, we briefly reconstruct (...) some of the biases of reductionism to which geneticists (as well as other researchers referring to genetic methods and explanations) are particularly exposed to, and we analyse the problem in the context of the biologization of ethnoracial categories. Our work constitutes a novel, in-depth contribution to the debate about reporting race and ethnicity in biomedical and health research. First, we reconstruct the theoretical background assumptions about racial ontology which researchers implicitly presume in their studies with the aid of a sample of recent papers published in medical journals about COVID-19. Secondly, we use the typology of the biases of reductionism to the problem of biologization of ethnoracial categories with reference to genetics and genomics. (shrink)

Fichte argues that the conclusion of Kant’s transcendental deduction of the categories is correct yet lacks a crucial premise, given Kant’s admission that the metaphysical deduction locates an arbitrary origin for the categories. Fichte provides the missing premise by employing a new method: a genetic deduction of the categories from a first principle. Since Fichte claims to articulate the same view as Kant in a different, it is crucial to grasp genetic deduction in relation to the sorts (...) of deduction that Kant offers. I propose to interpret genetic deduction as the simultaneous fulfillment of two tasks: answering the question quid facti by deriving the categories from the I and answering the question quid juris by establishing our entitlement to the categories as conditions of experience. While the second task represents Fichte’s agreement with Kant’s transcendental deduction, the first reflects his correction of Kant’s metaphysical deduction. (shrink)

To investigate the metaphysics of gender categories—categories like “woman,” “genderqueer,” and “man”—is to ask questions about what gender categories are and how they exist. This chapter offers a pluralist account of the metaphysics of gender categories, according to which there are several different varieties of gender categories. I begin by giving a brief overview of some feminist accounts of the metaphysics of gender categories and illustrating how certain moral and political considerations have been in (...) play in these discussions as constraints on acceptable accounts of gender categories. I then present my pluralist account of gender categories and highlight some of its virtues. Finally, I assess how my pluralist account fares relative to the moral and political considerations identified earlier in the chapter. I argue that although the account does not fare well, we should in fact revise our understanding of what those considerations are and how they should constrain our accounts of gender categories. I then show that, on this revised understanding, my pluralist account emerges as a viable position. (shrink)

This paper addresses the question of what we can legitimately say about things in themselves in Kant's critical doctrine. Many Kant scholars believe that Kant allows that things in themselves can be characterized through the unschematized or ‘pure’ concepts of our understanding such as ‘substance’ or ‘causality’. However, I show that on Kant's view things in themselves do not conform to the unschematized categories : the pure categories, like space and time, are merely subjective forms of finite, discursive (...) cognition. I then examine what this interpretation might entail for central aspects of Kant's system such as his doctrine of noumenal freedom. (shrink)

This volume constitutes the largest collection of writings by the Italian philosopher Giorgio Agamben hitherto published in any language and all but one appear in English for the first time. The essays consider figures in the history of philosophy (Plato, Plotinus, Spinoza, Hegel) and twentieth-century thought (Walter Benjamin, Heidegger, Derrida, Deleuze, the historian Aby Warburg, and the linguist J.-C. Milner). They also examine several central concerns of Agamben: the relation of linguistic and metaphysical categories; messianism in Islamic, Jewish, (...) and Christian theology; and the state and future of contemporary politics. Despite the diversity of the texts collected here, they show a consistent concern for a set of overriding philosophical themes concerning language, history, and potentiality. (shrink)

Boethius, like his Neoplatonic predecessors, poses a challenge to contemporary readers of the Consolation seeking to understand the world he thinks we occupy. That world involves a timeless, simple, but all- knowing creator god and a time-bound, infinite creation that is patterned from the ideas in the divine mind. The purpose of this chapter is to provide a modest illumination into the world as it is conceived in the Consolation by examining two fundamental Boethian categories and their relationship: the (...) eternal and the temporal. The chapter examines the extent to which we should see these categories providing guidance as to the nature of beings rather than expressing the epistemic perspectives those beings have. By noting the limits, we will draw conclusions about the persistence of temporal beings; the ontological status possessed by future, present, and past states of affairs; and what characterizes eternal existence. (shrink)

Explicit concepts and sufficiently precise definitions are the basis for further advance of a science beyond a given level. To move toward a situation where the whole population has access to the authentic results of science (italics mine) requires making explicit some general philosophical principles which can help to guide the learning, development, and use of mathematics, a science which clearly plays a pivotal role regarding the learning, development and use of all the sciences. Such philosophical principles have not come (...) from speculation but from studying and concentrating the development of actual mathematical subjects such as algebraic geometry, functional analysis, continuum mechanics, combinatorics, etc. The simplifications in the conceptual relations revealed by such philosophical/mathematical advances are of great value, not only in: (1) clarifying and guiding further research in the mathematical sciences, but also in (2) reforming pedagogy and popularization in ways that will not prove deceptive. (shrink)

In recent work, Amie Thomasson has sought to develop a new approach to the philosophy of the categories which is metaphysically neutral between traditional realist and conceptualist approaches, and which has its roots in the ‘correlationalist’ approach to categories put forward in Husserl’s writings in the 1900s–1910s and systematically charted over the past few decades by David Woodruff Smith in his studies of Husserl’s philosophy. Here the author aims to provide a recontextualization and critical assessment of (...) correlationalism in a Husserlian vein. To this end, the author presents, first, the reasons why, later in his life, Husserl himself found his earlier treatment of categories philosophically naive, and why he increasingly advocated for a more genetic-teleological account. The author then draws upon arguments made a century earlier by Schelling and Hegel, in criticism of Fichte, to point up what might remain philosophically unsatisfying about even the post-correlationalist genetic position of the later Husserl, in light of the pronounced trend in Husserl’s own development, on the questions of reason and spirit, toward absolute idealism. (shrink)

Résumé -/- Dans son premier livre (Philosophie de l’arithmétique 1891), Husserl élabore une très intéressante philosophie des mathématiques. Les concepts mathématiques sont interprétés comme des concepts de « deuxième ordre » auxquels on accède par une réflexion sur nos opérations mentales de numération. Il s’ensuit que la vérité de la proposition : « il y a trois pommes sur la table » ne consiste pas dans une relation mythique quelconque avec la réalité extérieure au psychique (où le nombre trois doit (...) être exemplifié de quelque manière), mais bien dans le fait que les pommes sur la table peuvent être dénombrées correctement en tant qu’elles sont au nombre de trois. Nous avons affaire ici à une position « antiréaliste » fondant la vérité mathématique non pas dans un monde platonicien, mais bien sur le concept de rectitude de nos opérations formelles. -/- Abstract -/- In his first book (Philosophy of Arithmetic 1891) Husserl develops a very interesting philosophy of mathematics. Mathematical concepts are interpreted as « second order » concepts gained by reflection on our mental operations of counting. Accordingly the truth of the proposition « There are three apples on the table » consists not in any mythical relation to the extra-mental reality (where the number three should be somehow exemplified), but rather in the fact that the apples on the table can be correctly counted as three. We have here an « anti-realist » position grounding the mathematical truth not in platonic realms, but rather in the concept of correctness of our formal operations. (shrink)

This article discusses development of the content of the concept “Philosophy Steamer,” which refers to the 1922 expulsion from Russia of a group of intelligentsia who sharply criticized the authorities. The author shows that the group of exiled philosophers was united both by their previous philosophical and social activity and by their joint activity as émigrés. She analyzes the concepts of “historical collective individuality,” “collective person,” and “communal person” introduced by Lev P. Karsavin in order to determine the holistic (...) nature of this exiled social group and its characteristic self-consciousness, behavior, aspirations, and feelings (moods). Examining the event known as the “Philosophy Steamer” through the concepts listed above allows the author to cognize the historical, social, and cultural reality more broadly and productively. The article demonstrates that the concept of a collective person can also be applied to other social groups, thereby extending the methodology of human-studies cognition beyond the study of facts and statistical data. (shrink)

Among the main concerns of 20th century philosophy was that of the foundations of mathematics. But usually not recognized is the relevance of the choice of a foundational approach to the other main problems of 20th century philosophy, i.e., the logical structure of language, the nature of scientific theories, and the architecture of the mind. The tools used to deal with the difficulties inherent in such problems have largely relied on set theory and its “received view”. There are (...) specific issues, in philosophy of language, epistemology and philosophy of mind, where this dependence turns out to be misleading. The same issues suggest the gain in understanding coming from category theory, which is, therefore, more than just the source of a “non-standard” approach to the foundations of mathematics. But, even so conceived, it is the very notion of what a foundation has to be that is called into question. The philosophical meaning of mathematics is no longer confined to which first principles are assumed and which “ontological” interpretation is given to them in terms of some possibly updated version of logicism, formalism or intuitionism. What is central to any foundational project proper is the role of universal constructions that serve to unify the different branches of mathematics, as already made clear in 1969 by Lawvere. Such universal constructions are best expressed by means of adjoint functors and representability up to isomorphism. In this lies the relevance of a category-theoretic perspective, which leads to wide-ranging consequences. One such is the presence of functorial constraints on the syntax–semantics relationships; another is an intrinsic view of (constructive) logic, as arises in topoi and, subsequently, in more general fibrations. But as soon as theories and their models are described accordingly, a new look at the main problems of 20th century’s philosophy becomes possible. The lack of any satisfactory solution to these problems in a purely logical and set-theoretic setting is the result of too circumscribed an approach, such as a static and punctiform view of objects and their elements, and a misconception of geometry and its historical changes before, during, and after the foundational “crisis”, as if algebraic geometry and synthetic differential geometry – not to mention algebraic topology – were secondary sources for what concerns foundational issues. The objectivity of basic geometrical intuitions also acts against the recent version of structuralism proposed as ‘the’ philosophy of category theory. On the other hand, the need for a consistent and adequate conceptual framework in facing the difficulties met by pre-categorical theories of language and scientific knowledge not only provides the basic concepts of category theory with specific applications but also suggests further directions for their development (e.g., in approaching the foundations of physics or the mathematical models in the cognitive sciences). This ‘virtuous’ circle is by now largely admitted in theoretical computer science; the time is ripe to realise that the same holds for classical topics of philosophy. (shrink)

There exists a dispute in philosophy, going back at least to Leibniz, whether is it possible to view the world as a network of relations and relations between relations with the role of objects, between which these relations hold, entirely eliminated. Category theory seems to be the correct mathematical theory for clarifying conceptual possibilities in this respect. In this theory, objects acquire their identity either by definition, when in defining category we postulate the existence of objects, or formally by (...) the existence of identity morphisms. We show that it is perfectly possible to get rid of the identity of objects by definition, but the formal identity of objects remains as an essential element of the theory. This can be achieved by defining category exclusively in terms of morphisms and identity morphisms and, analogously, by defining category theory entirely in terms of functors and identity functors. With objects and categories eliminated, we focus on the “philosophy of arrows” and the roles various identities play in it. This perspective elucidates a contrast between “set ontology” and “categorical ontology”. (shrink)

Category mistakes are sentences such as 'Green ideas sleep furiously' or 'Saturday is in bed'. They strike us as highly infelicitous but it is hard to explain precisely why this is so. Ofra Magidor explores four approaches to category mistakes in philosophy of language and linguistics, and develops and defends an original, presuppositional account.

This paper investigates two related aspects of Aristotle’s conception of primary substances in the Categories. In Section 1 I distinguish different interpretations of the relation between a primary substance and its accidental attributes: one (A) according to which a primary substance encompasses all of its attributes, including the accidental ones; another (B) according to which a primary substance encompasses only its essential attributes, whereas the accidental attributes are extrinsic to the substance, though related to it; and a third, intermediate (...) one (C) according to which a primary substance encompasses neither all of its attributes nor only the essential ones, but all the necessary ones. I trace the history of all three interpretations and argue in favour of (B). In Section 2 I defend the view that a particular human being, their soul, and their body all count as primary substances, and that the relation between these three substances is that soul and body are parts of the substance. I show that this hypothesis harmonizes both with some views advanced in the Categories and with some passages from other Aristotelian works. I conclude by drawing a comparison between this view and Aristotle’s mature hylomorphic doctrine. (shrink)

Paul E. Griffiths argues that most research on the emotions has been as misguided as Aristotelian efforts to study "superlunary objects" - objects...