ASSENT AND ARGUMENT PHILOSOPHIA ANTIQUA A SERIES OF STUDIES ON ANCIENT PHILOSOPHY FOUNDED BY J.H. WASZINK AND W.J. VERDENIUS EDITED BY ]. MANSFEW, D.T. RUNIA J. C. M. VAN WIND EN VOLUME LXXVI BRAD INWOOD AND JAAP MANSFELD (Ens.) ASSENT AND ARGUMENT ASSENT AND ARGUMENT STUDIES IN CICERO'S ACADEMIC BOOKS Proceedings of the 7th Symposium Hellenisticum (Utrecht, August 21-25, 1995) EDITED BY BRAD INWOOD JAAP MANSFELD AND BRILL LEIDEN · NEW YORK · KOLN 1997 This book is printed on acid-free paper. Library of Congress Cataloging-in-Publication Data Symposium Hellenisticum, (7th : 1995 : Utrecht, Netherlands) Assent and argument : studies in Cicero's Academic books : proceedings of the 7th Symposium Hellenisticum, (Utrecht, August 21-25, 1995) I edited by Brad Inwood andJaap Mansfeld. p. em.-(Philosophia antiqua, ISSN 0079-1687 ; v. 76) Includes bibliographical references and indexes. ISBN 9004109145 (alk. paper) 1. Cicero, Marcus Tullius. Academica--congresses. 2. Knowledge, Theory of-Congresses. 3. Philosophy, Ancient--congresses. I. Inwood, Brad. II. Mansfeld, Jaap. III. Title. N. Series. PA6296.A3S96 1997 l86'.2-dc21 97-35992 CIP Die Deutsche Bibliothek - CIP-Einheitsaufnahtne Assent and argument: studies in Cicero's academic books : proceedings of the 7th Symposium Hellenisticum, (Utrecht, August 21 - 25, 1995) I ed. by Brad Inwood andJaap Mansfeld.-Leiden; New York; Ko1n : Brill, 1997 (Philosophia antiqua ; Vol. 76 ) ISBN 90-{)4--1 0914--5 ISSN 0079-1687 ISBN 90 04 10914 5 © Copyright 1997 by Koninklijke BriU, Ltiden, 1he Netherlands AU rights reserved. No part of this publication may he reproduced, translated, stored in a retrieval .rystem, or transmitted in any form or by any means, electronic, mechanical, plwtocopying, recording or otherwise, witlwut prior written permission .from the publisher. PRINfED IN THE NETHERLANDS TABLE OF CONTENTS PREFACE............................................................................................. vii INTRODUCTION................................................................................ ix M. GRIFFIN, 'The composition of the Academica: motives and versions'....................................................................................... 1 W. G6RLER, 'Cicero's philosophical stance in the Lucullus' ..... 36 J. GLUCKER, 'Socrates in the Academic books and other Ciceronian works'...................................................................... 58 T. DORANDI, 'Gli Academica quale fonte per Ia storia dell' Academia'................................................................................... 89 K A. ALGRA, 'Chrysippus, Carneades, Cicero: the ethical divisiones in Cicero's Lucullus'...... .. . . . .. . . . . . .. . . .. . . . . .. .. . . . .. . . . . . .. . . . . . . .. 107 J. BARNES, 'Logic in Academica I and the Lucullus' .................. 140 R. J. HANKINSON, 'Natural criteria and the transparency of judgement: Antiochus, Philo and Galen on epistemo- logical justification'.................................................................... 161 J. ALLEN, 'Carneadean argument in Cicero's Academic books' 217 G. STRIKER, 'Academics fighting Academics'.......................... 257 M. F. BuRNYEAT, 'Antipater and self-refutation: elusive argu- ments in Cicero's Academica' .................................................... 277 INDEX NOMINUM ET RERUM.......................................................... 311 INDEX LocoRUM PoTIORUM ......................................................... 316 PREFACE The seventh Symposium Hellenisticum was held in The Nether lands at Utrecht University, August 21-25, 1995 under the generous sponsorship of the Department of Philosophy. The ten papers presented here are revised versions of the drafts distributed to the participants in advance and discussed at the meetings. The final versions bear the signs of this discussion and of reflection and revision over the months following the conference. The participants at the Symposium were: Antonina Alberti, Keimpe Algra, James Allen, Julia Annas, Han Baltussen, Susanne Bobzien, Jacques Brunschwig, Myles Burnyeat, Irma Croese, Tiziano Dorandi, Dorothea Frede, John Glucker, Woldemar Gorier, Miriam Griffin, David Hahm, James Hankinson, Brad Inwood, Anna Maria Ioppolo, Mieke Koenen, Andre Laks, Carlos Levy, Jaap Mansfeld, Mario Mignucci, David Runia, Malcolm Schofield, Piet Schrijvers, David Sedley, Gisela Striker, and Teun Tieleman. Jonathan Barnes was unable to attend in person, but his paper was presented and discussed in his absence. Financial support for the Symposium came from the home Universities of the participants, from various pots in Utrecht Uni versity, from the De Vogel Foundation, and from NWO (Nether lands Organization for Scientific Research). The organizers of the Symposium wish to acknowledge the generous assistance without which this conference could not have been held. One of our tasks was to impose, as best we could, some measure of standardization on the varieties of conventions used by the contributors. In this area we may not have been entirely success ful, for instance as to the references to ancient authors (but through out we use Ac. I for the first book of the last edition of the Academica, and Luc. for the second book of the first edition). Those to modern authors are given in the form name plus year; the bibliographies are the be found at the end of each paper. Quotations in Latin are not italicized, apart from single words or words deserving special emphasis. Further, the majority of our contributors quoting Greek words and phrases do so using the Greek alphabet, while others prefer to transliterate; here as a rule we have not bothered to interfere. The indexes do not strive atcompleteness, but pick out the