The Metaphysics Of Identity

The philosophical problem of identity and the related problem of change go back to the ancient Greek philosophers and fascinated later figures including Leibniz, Locke, and Hume. Heraclitus argued that one could not swim in the same river twice because new waters were ever flowing in. When is a river not the same river? If one removes one plank at a time when is a ship no longer a ship? What is the basic nature of identity and persistence? In this book, André Gallois introduces and assesses the philosophical puzzles posed by things persisting through time. Beginning with essential historical background to the problem he explores the following key topics and debates: mereology and identity, including arguments from 'Leibniz's Law' the constitution view of identity the 'relative identity' argument concerning identity temporary identity four-dimensionalism, counterpart and multiple counterpart theory supervenience the problem of temporary intrinsics the necessity of identity Indeterminate identity presentism criteria of identity conventionalism about identity. Including chapter summaries, annotated further reading and a glossary, this book is essential reading for anyone seeking a clear and informative introduction to and assessment of the metaphysics of identity.

Terence Parsons presents a lively and controversial study of philosophical questions about identity. Is a person identical with that person's body? If a ship has all its parts replaced, is the resulting ship identical with the original ship? If the discarded parts are reassembled, is the newlyassembled ship identical with the original ship? Because these puzzles remain unsolved, some people believe that they are questions that have no answers, perhaps because the questions are improperly formulated; they believe that there is a problem with the language used to formulate them. Parsonsexplores a different possibility: that such puzzles lack answers because of the way the world is (or because of the way the world is not); there is genuine indeterminacy of identity in the world. He articulates such a view in detail and defends it from a host of criticisms that have been levelledagainst the very possibility of indeterminacy in identity.

Original essays on the metaphysics of time, identity, and the self, written by distinguished scholars and important rising philosophers.The concepts of time and identity seem at once unproblematic and frustratingly difficult. Time is an intricate part of our experience—it would seem that the passage of time is a prerequisite for having any experience at all—and yet recalcitrant questions about time remain. Is time real? Does time flow? Do past and future moments exist? Philosophers face similarly stubborn questions about identity, particularly about the persistence of identical entities through change. Indeed, questions about the metaphysics of persistence take on many of the complexities inherent in philosophical considerations of time. This volume of original essays brings together these two essentially related concepts in a way not reflected in the available literature, making it required reading for philosophers working in metaphysics and students interested in these topics. The contributors, distinguished authors and rising scholars, first consider the nature of time and then turn to the relation of identity, focusing on the metaphysical connections between the two, with a special emphasis on personal identity. The volume concludes with essays on the metaphysics of death, issues in which time and identity play a significant role. This groundbreaking collection offers both cutting-edge epistemological analysis and historical perspectives on contemporary topics.ContributorsHarriet Baber, Lynne Rudder Baker, Ben Bradley, John W. Carroll, Reinaldo Elugardo, Geoffrey Gorham, Mark Hinchliff, Jenann Ismael, Barbara Levenbook, Andrew Light, Lawrence B. Lombard, Ned Markosian, Harold Noonan, John Perry, Harry S. Silverstein, Matthew H. Slater, Robert J. Stainton, Neil A. Tognazzini

One of the most debated topics in medieval philosophy was the metaphysics of identity that is, what accounts for the distinctness (non-identity) of different individuals of the same, specific kind and the persistence (self-identity) of the same individuals over time and in different possible situations, especially with regard to individuals of our specific kind, namely, human persons. The first three papers of this volume investigate the comparative development of positions. One problem, considered by William of Auvergne and Albert the Great, deals with Aristotle's doctrine of the active intellect and its relation to Christian philosophical conceptions of personhood. A larger set of issues on the nature and post-mortem fate of human beings is highlighted as common inquiry among Muslim philosophers and Thomas Aquinas, as well as Aquinas and the modern thinker John Locke. Finally, the last two papers offer a debate over Aquinas's exact views regarding whether substances persist identically across metaphysical "gaps" (periods of non-existence), either by nature or divine power.

One of the most debated topics in medieval philosophy was the metaphysics of identity—that is, what accounts for the distinctness (non-identity) of different individuals of the same, specific kind and the persistence (self-identity) of the same individuals over time and in different possible situations, especially with regard to individuals of our specific kind, namely, human persons. The first three papers of this volume investigate the comparative development of positions. One problem, considered by William of Auvergne and Albert the Great, deals with Aristotle’s doctrine of the active intellect and its relation to Christian philosophical conceptions of personhood. A larger set of issues on the nature and post-mortem fate of human beings is highlighted as common inquiry among Muslim philosophers and Thomas Aquinas, as well as Aquinas and the modern thinker John Locke. Finally, the last two papers offer a debate over Aquinas’s exact views regarding whether substances persist identically across metaphysical “gaps” (periods of non-existence), either by nature or divine power.

Jonathan Lowe argues that metaphysics should be restored to a central position in philosophy, as the most fundamental form of rational inquiry, whose findings underpin those of all other disciplines. He portrays metaphysics as charting the possibilities of existence, by idetifying the categories of being and the relations of ontological dependency between entities of different categories. He proceeds to set out a unified and original metaphysical system: he defends a substance ontology, according to which the existence of the world s one world in time depends upon the existence of persisting things which retain their identity over time and through processes of qualitative change. And he contends that even necessary beings, such as the abstract objects of mathematics, depend ultimately for their existence upon there being a concrete world of enduring substances. Within his system of metaphysics Lowe seeks to answer many of the deepest and most challenging questions in philosophy.

In this volume, Geoffrey Madell develops a revised account of the self, making a compelling case for why the "simple" or "anti-criterial" view of personal identity warrants a robust defense. Madell critiques recent discussions of the self for focusing on features which are common to all selves, and which therefore fail to capture the uniqueness of each self. In establishing his own view of personal identity, Madell proposes (a) that there is always a gap between ‘A is f and g’ and ‘I am f and g’; (b), that a complete description of the world offered without recourse to indexicals will fail to account for the contingent truth that I am one of the persons described; and (c), that an account of conscious perspectives on the world must take into account what it means for an apparently arbitrary one of these perspectives to be mine. Engaging with contemporary positions on the first person, embodiment, psychological continuity, and other ongoing arguments, Madell contends that there can be no such thing as a criterion of personal identity through time, that no bodily or psychological continuity approach to the issue can succeed, and that personal identity through time must be absolute, not a matter of degree. Madell’s view that the nature of the self is substantively different from that of objects in the world will generate significant discussion and debate among philosophers of mind.

In this exploration of timeless philosophical issues regarding persistence, change, time, and sameness Andre Gallois offers a critical survey of a number of rival views about the nature of identity and change and proposes his own original theory in the face of the prevailing orthodoxy.