Eide

Scientific literature on particular themes in ontology is extremely abundant, but it is often very hard for freshmen or sophomores to find a red thread between the various proposals.
This text is an opinionated introduction, a preliminary text to research in ontology from the so called standard approach to ontological commitment, that is from the particular point of view that connects ontological questions to quantificational questions. It offers a survey of this viewpoint in ontology together with their possible applications through a broad array of examples and open problems and, at the same time, essential references to the classics of philosophy, so as to allow non-specialists to understand the terms and analysis procedures characterizing the discipline. Its result is a wide-ranging overview of the issued tackled by ontology, with a particular focus on the most relevant problems of contemporary debate (categorial taxonomies, nonexistent objects, case studies of ontological debates in specific fields of knowledge).

David Malet Armstrong (8 July 1926–13 May 2014) has been one of the most influential contemporary metaphysicians working in the analytic tradition and surely the greatest 20th century Australian philosopher. His main merit is to have reestablished metaphysics as a respectable branch of philosophy placing it at the centre of the philosophical debate, and giving it the status of an authoritative and competent interlocutor of both rational and empirical sciences. By means of a rigorously argumentative approach and a sharp prose, Armstrong has built a whole metaphysical system, that is, a comprehensive and unified picture of the fundamental structure of the world. The various chapters of the book address the key issues concerning Armstrong' view about the problem of universals, the nature of states of affairs, the ontological ground of possibility, nomic necessity, and dispositions, the truthmaker theory, and the theory of mind. This volume aims to celebrate Armstrong’s memory bringing new understanding, and hopefully stimulating more work, on his philosophy, with the conviction that it constitutes an invaluable heritage for contemporary research in metaphysics.

The essays in this volume, first presented at an international conference held at the University of Urbino, Italy, in 2011, explore the different senses of realism, arguing both for and against its distinctive theses and considering these senses from a historical point of view. The first sense is the metaphysical thesis that whatever exists does so, and has the properties it has, independently of whether it is the object of a person's thought or perception. The second sense of realism is epistemological, wherein realism claims that, in some cases, it is possible to know the world as it exists in and of itself. A third sense, which has become known as ontological realism, states that universals exist as well as individuals. The essays collected here make new contributions to these fundamental philosophical issues, which have largely defined western analytic philosophy, from Plato and Aristotle to the present day.

Logic is of course a general resource for reasoning at large. But in the first half of the twentieth century, it developed particularity with a view to mathematical applications, and the field of mathematical logic came into being and flourished. In the second half of the century, much the same happened with regard to philosophical applications. Hence philosophical logic.

The deliberations of this book cover a varied but interrelated array of key issues in the field. They address the representation of information in linguistic formulation, and modes of cogent demonstration in logic, mathematics, and empirical investigation, as well as the role of logic in philosophical deliberations. Overall, the book seeks to demonstrate and illustrate the utility of logic as a productive resource for rational inquiry at large.

In the last decades, Ingvar Johansson has made a formidable contribution to the development of philosophy in general and perhaps especially to the development of metaphysics. This volume consists of original papers written by 50 philosophers from all over the world in honour of Ingvar Johansson to celebrate his 70th birthday. The papers cover traditional issues in metaphysics and the philosophy of mind, applied ethics and applied metaphysics, the nature of human rights, the philosophy of economics and sports. Some of the papers study the philosophy of Ingvar Johansson. All of them studies subjects which he has shown an interest in. The variety of subjects covered, testifies to the extraordinary wide range of issues his thought has had a bearing on.

Herbert Hochberg is one of the most influential analytical philosophers and one of the most influential critics of analytical philosophy. He disputed with almost all leading analytical philosophers, from Quine, Goodman and Wilfrid Sellars to David Lewis and David Armstrong. His point of view is ontological and he harks back to the origins of analytical philosophy where he finds unknown precursors of current views. And he finds parallels to contemporary non-analytic philosophies. In his own ontology he tries to dispense with simple particulars.

This volume is about ontological categories. The categories of an ontology are designed to classify all existents. They are crucial and characterize an ontology.

Generally, categories are understood to express the most general features of reality. Yet, since categories have this special status, obtaining a correct list of them is difficult. This question is addressed by examining how Thomas Aquinas establishes the list of categories through a technique of identifying diversity in how predicates are per se related to their subjects. A sophisticated critique by Duns Scotus of this position is also examined, a rejection which is fundamentally grounded in the idea that no real distinction can be made from a logical one. It is argued Aquinas's approach can be rehabilitated in that real distinctions are possible when specifically considering per se modes of predication. This discussion between Aquinas and Scotus bears fruit in a contemporary context insofar as it bears upon, strengthens, and seeks to correct E. J. Lowe's four-category ontology view regarding the identity and relation of the categories.

Reinhardt Grossmann is one of the most sophisticated, knowledgeable and original contemporary metaphysicians. Although he was a student of Bergmann, he influenced the development of Bergmann's metaphysics considerably. No philosopher other than Grossmann defends perception to that degree against the persistent skeptical arguments. He characterizes his epistemological positions as radical empiricism and radical realism. By realism Grossmann mainly means the view that the material things we perceive exist. It is thus also an ontological position and closely related to his empiricism. Grossmann's empiricism is radical insofar as he claims that entities of all categories are perceptible, even numbers and universals. Grossmann's universal realism advocates a theory of abstract categories against the current naturalism. He distinguishes between the world and the physical universe. The latter is the domain of science; the former is the subject of ontology.