A Materialist Theory of the Mind ‘A groundbreaking book.’ — David Rosenthal, City University New York, USA D. M. Armstrong’s A Materialist Theory of the Mind is widely known as one of the most important defences of the view that mental states are nothing but phys- ical states of the brain. A landmark of twentieth-century philosophy of mind, it launched the physicalist revolution in approaches to the mind and has been engaged with, debated and puzzled over ever since its frst publication over ffty years ago. Ranging over a remarkable number of topics, from behaviourism, the will and knowledge to perception, bodily sensation and introspection, Armstrong argues that mental states play a causally intermediate role between stimuli, other mental states and behavioural responses. He uses several illuminating examples to illustrate this, such as the classic case of pain. This Routledge Classics edition includes a new Foreword by Peter Anstey, placing Armstrong’s book in helpful philosophical and historical context. David Malet Armstrong was born in 1926 in Melbourne, Australia. He studied philosophy at the University of Sydney before going to Oxford, taking the recently estab- lished B. Phil. degree in 1954. He taught briefy at Birkbeck College, London, before returning to Australia to teach at the University of Melbourne. He succeeded J.L. Mackie in Anderson’s chair at Sydney in 1964, where he taught until his retirement in 1991. He died in 2014. ‘Routledge Classics is more than just a collection of texts… it embodies and circulates challenging ideas and keeps vital debates current and alive.’ – Hilary Mantel The Routledge Classics series contains the very best of R outledge’s publishing over the past century or so, books that have, by popular consent, become established as classics in their feld. Drawing on a fantastic heritage of innovative writ- ing published by Routledge and its associated imprints, this series makes available in attractive, afordable form some of the most important works of modern times. For a complete list of titles visit: https://www.routledge.com/Routledge-Classics/ book-series/SE0585 D. M. Armstrong A Materialist Theory of the Mind With a new Foreword by Peter Anstey Designed cover image: © ahmed kriter / Getty Images First published in Routledge Classics 2023 by Routledge 4 Park Square, Milton Park, Abingdon, Oxon OX14 4RN 605 Third Avenue, New York, NY 10158 and by Routledge Routledge is an imprint of the Taylor & Francis Group, an informa business Foreword © 2023 Peter Anstey © 1968, 1993, 2023 D. M. Armstrong All rights reserved. No part of this book may be reprinted or reproduced or utilised in any form or by any electronic, mechanical, or other means, now known or hereafter invented, including photocopying and recording, or in any information storage or retrieval system, without permission in writing from the publishers. Trademark notice: Product or corporate names may be trademarks or registered trademarks, and are used only for identifcation and explanation without intent to infringe. First published 1968 by Routledge & Kegan Paul Published in Paperback with a new Preface 1993 by Routledge British Library Cataloguing-in-Publication Data A catalogue record for this book is available from the British Library Library of Congress Cataloging-in-Publication Data A catalog record has been requested for this book ISBN: 978-1-032-35793-5 (hbk) ISBN: 978-1-032-35541-2 (pbk) ISBN: 978-1-003-32865-0 (ebk) DOI: 10.4324/b23154 Typeset in Joanna by codeMantra Contents FOREWORD TO THE ROUTLEDGE CLASSICS EDITION ix ACKNOWLEDGEMENTS xv PREFACE TO THE 1993 EDITION xvii Introduction 1 PART 1: THEORIES OF MIND 5 1 A Classification of Theories of Mind 7 2 Dualism 18 3 The Attribute Theory 41 4 A Difficulty for any Non-Materialist Theory of Mind 54 5 Behaviourism 60 6 The Central-State Theory 81 viii CONTENTS PART 2: THE CONCEPT OF MIND 139 7 The Will (1) 141 8 The Will (2) 186 9 Knowledge and Inference 203 10 Perception and Belief 225 11 Perception and Behaviour 264 12 The Secondary Qualities 291 13 Mental Images 313 14 Bodily Sensations 329 15 Introspection 347 16 Belief and Thought 364 PART 3: THE NATURE OF MIND 377 17 Identifcation of the Mental with the Physical 379 BIBLIOGRAPHY 393 INDEX 397 Foreword to the Routledge Classics Edition Some books keep on keeping on: A Materialist Theory of the Mind is one of those books. Now published in the Routledge Classics series, D. M. Armstrong’s magnum opus is still being cited and is still stimulating research on the philosophy of mind, even though it frst appeared back in 1968. The frst appearance of the book was, at the time, a much anticipated event in the history of analytic philosophy, and it should come as no surprise that Michael Beaney lists its publication on his ‘Chronology of analytic philosophy’ in The Oxford Handbook of the History of Analytic Philosophy (see Beaney 2013, p. 114). The book reached beyond the English-speaking world, having been translated into P olish, Japanese and Korean. In his preface to the paperback edition that appeared in 1993, Arm- strong took the opportunity to refect on the infuences and origins of his book and to survey ‘what is living and what is dead’ among its main themes. By contrast, in this new foreword I aim to zoom out a little and to survey Armstrong’s writings on materialism about the