Aquinas on Mind Topics in Medieval Philosophy Edited by John Marenbon Trinity College, Cambridge In recent years philosophers in England and America have come to recognize the interest and importance of medieval philosophy. However, there are very few books to which the student and scholar can turn with ease. The choice is often between general studies which lack the rigour which philosophers expect, or specialist works which are hardly comprehensible to those not already deeply familiar with medieval ways of thought. This series provides books which consider problems and arguments in medieval philosophy in detail and with precision, but which do not assume any familiarity with the Middle Ages. In the same series: Modalities in Medieval Philosophy Simo Knuuttila Epistemic Logic in the Later Middle Ages Ivan Boh Aquinas on Mind Anthony Kenny London and New York First published 1993 This edition published in the Taylor & Francis e-Library, 2004. First published in paperback 1994 by Routledge 11 New Fetter Lane, London EC4P 4EE Simultaneously published in the USA and Canada by Routledge 29 West 35th Street, New York, NY 10001 © 1993, 1994 Anthony Kenny All rights reserved. No part of this book may be reprinted or reproduced or utilized 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. British Library Cataloguing in Publication Data Kenny, Anthony Aquinas on Mind.—(Topics in Medieval Philosophy Series) I. Title II. Series 189.4 Library of Congress Cataloging in Publication Data Kenny, Anthony John Patrick. Aquinas on Mind/Anthony Kenny. p. cm.—(Topics in medieval philosophy) Includes bibliographical references. 1. Thomas, Aquinas, Saint, 1225?–1274. 2. Philosophy of mind —History. 3. Mind and body—History. I. Title. II. Series. B76¢5.T¢54K44 1993 128 .2 092–dc20 92–12224 ISBN 0-203-00494-9 Master e-book ISBN ISBN 0-203-20065-9 (Adobe eReader Format) ISBN 0-415-04415-4 (hbk) ISBN 0-415-11306-7 (pbk) Content Preface vii Abbreviations viii 1 Why read Aquinas? 1 2 Mind and metaphysics 15 3 Perception and imagination 31 4 The nature of the intellect 41 5 Appetite and will 59 6 The freedom of the will 75 7 Sense, imagination and intellect 89 8 Universals of thought 101 9 Knowledge of particulars 111 10 Self-knowledge 119 11 The nature of the soul 129 12 Mind and body 145 Notes 161 Further reading 177 Index 179 Preface My interest in the philosophy of mind of St Thomas Aquinas was first aroused in the 1950s by two professors at the Gregorian University in Rome, Fr Peter Hoenen, SJ and Fr Bernard Lonergan, SJ. To this day I regard Hoenen’s La Théorie du jugement selon S.Thomas d’Aquin and Lonergan’s Verbum as two of the most illuminating books about Aquinas’ work in this area. The relevance of Aquinas to contemporary philosophy of mind was later brought home to me by Professor Peter Geach and Father Herbert McCabe. Significant parts of the present book are the result of reflection on the texts of Aquinas undertaken in joint classes with McCabe in Oxford. I am greatly indebted to him and to the other scholars I have mentioned. In 1989 I published a book entitled The Metaphysics of Mind. This was a systematic, not a historical, treatise, and its structure was based on that of Gilbert Ryle’s The Concept of Mind. None the less, the philosophical account presented was influenced by the thought of Aquinas, and scholars will have been able to recognize many Thomist elements in the book. For some years I have been collecting material for an explicit account of Aquinas’ philosophy of mind. It is here presented not in a systematic structure, but rather in the form of a close reading of that part of St Thomas’ Summa Theologiae which contains the most mature and comprehensive presentation of his philosophical psychology. The translations of the texts of Aquinas quoted in the course of my commentary are my own, but I am much indebted to the previous translations by Suttor, Durbin and McDermott mentioned in the Note on further reading. I am indebted to Dr John Marenbon for the invitation to present this material in the Routledge series in medieval philosophy. Oxford, February 1992 Abbreviations In citing works of Aquinas the following abbreviations have been used: A In Aristotelis Librum de Anima, ed. A.M.Pirotta (Rome, 1959), cited by lecture and paragraph number C In I ad Corinthios, ed. R.Cai (Turin, 1953), cited by chapter and paragraph number G Summa Contra Gentiles (Rome, Leonine Commission, 1934), cited by book and chapter number H In Libros Peri Hermeneias, ed. R.M.Spiazzi (Turin, 1955), cited by book and paragraph number M In XII Libros Metaphysicorum, ed. R.M.Spiazzi (Turin, 1950), cited by book, lecture and paragraph number S Summa Theologiae, ed. P.Caramello (Rome, 1953), cited by number of part (1, 1–2, 2–2, or 3), question, article, and if applicable objection or reply; thus ‘1–2, 3, 2 ad 2’ means: the reply to the second objection in the second article of the third question of the First Part of the Second Part U De Unitate Intellectus, ed. L.W.Keeler (Rome, 1936), cited by paragraph number V Quaestiones Disputatae de Veritate, ed. R.M.Spiazzi (Turin, 1953) 1 Why read Aquinas? Why should anyone wish to study the philosophy or psychology of St Thomas Aquinas? He was an Italian friar of the thirteenth century, writing in low Latin encumbered with antiquated jargon, subservient to the teaching authority of the medieval church. Why should a secular English reader in the twentieth century expect to learn anything of philosophical value as a reward for the labour of working through the text of the Summa Theologiae? Surely, one may think, the progress of psychology in the centuries that have passed will have rendered obsolete everything Aquinas wrote about the nature of the mind. The answer that one gives to questions such as these will depend, in the first place, on one’s conception of the nature of philosophy. Philosophy is an unusual, indeed unique, discipline. Some people would claim that it was the most attractive of all disciplines, for the following reason. On the one hand, philosophy seems to resemble a science in that the philosopher, like the scientist, is in pursuit of truth. In philosophy, as in science, there are discoveries to be made. There are certain things which philosophers of the present day understand which even the greatest philosophers of earlier generations failed to understand. The philosopher, therefore, has the excitement of belonging to a continuing, cooperative, cumulative endeavour, in the way that a scientist does. Each practitioner may nourish the hope of adding a stone to the cairn: one may make one’s tiny contribution to the building of the great edifice. And thus philosophy has some of the attractions of the natural sciences. On the other hand, philosophy seems to have the attraction of the arts and of the humanistic disciplines, in the following way. Unlike works of science, classic works of philosophy do not date. If we
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