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, Andre 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.

About the Author
Andre Gallois is Professor of Philosophy at Syracuse University, USA. His previous publications on issues about identity and persistence include his book Occasions of Identity (OUP, 1998).

Reviews

'An excellent guide through - and contribution to - the extensive literature on identity and persistence. Gallois' book is clear and accessible, and usefully brings together an array of historical and contemporary puzzles about how material objects continue to exist through time and change.' - Karen Bennett, Cornell University, USA

'Gallois's book is an excellent introduction to the philosophical puzzles connected to identity, change, and persistence. Its scope, clarity, and accessibility make it an ideal text for an undergraduate metaphysics course.' - Ryan Wasserman, Western Washington University, USA

'Gallois's book is a gem. Philosophers at every level will return repeatedly to the text for reference and clarification on the central issues that concern persistence and identity over time. It brings cutting edge and historical work together, and manages to give plenty of detail while remaining accessible to undergraduates.' - Chad Carmichael, Indiana University-Purdue University Indianapolis, USA

Book Information
ISBN 9780415843430
Author Andre Gallois
Format Paperback
Page Count 216
Imprint Routledge
Publisher Taylor & Francis Ltd
Weight(grams) 340g