Plato's (Metaphysics))

~o v . A. Vntcrnational Library of Philosophy Studies in and ScientificMethod)C (".1

FOUNDED BY: A. J. AYER PLATO'S EDITOR: BERNARD WILLIAMS ASSISTANT EDITOR: E. R. D. HONDERICK (METAPHYSICS) INDUCTIVE PROBABILITY by John Patrick Day. ) SENSATION AND PERCEPTION: A History of the Philosophy of Perception by D. W. Hamlyn. TRACTATUS LOGICO-PHILOSOPHICUS: Ludwig Wittenstein's Logiseh- philoJrJphiseheAbhandlung with a new Translation by D. F. Pears and B. F. McGuinness and with the Introduction by Bertrand Russell. PERCEPTION AND THE PHYSICAL WORLD by D. M. Armstrong. HUME'S PHILOSOPHY OF BELIEF: A Study of his First Inquiry by Antony Flew. KANT'S THEORY OF KNOWLEDGE: An Outline of One Central Argument in the Critiqueof Pure Reasonby Graham Bird. CONDITIONS FOR DESCRIPTION by Peter Zinkernagel, translated from the Danish by Olaf Lindum. AN EXAMINATION OF PLATO'S DOCTRINES by I. M. Crombie. Two volumes. I: Plato on Man and Society. II: Plato on Knowledge and Reality. PHENOMENOLOGY OF PERCEPTION by M. Merleau-Ponty, translated from the French by Colin Smith. THE IDEA OF JUSTICE AND THE PROBLEM OF ARGUMENT by Ch. Perelman, translated from the French by John Petrie. LECTURES ON PSYCHICAL RESEARCH by C. D. Broad. Incorporating the Perrott Lectures given in Cambridge University in 1959 and 1960. THE VARIETIES OF GOODNESS by George Henrik von Wright. METHOD IN THE PHYSICAL SOENCES by G. Schlesinger. METHOD IN ETHICAL THEORY by Abraham Edel. SOENCE, PERCEPTION AND REALITY by Wilfrid Sellars. NORM AND ACTION: A Logical Enquiry by Georg Henri, von Wright. PHILOSOPHY AND SCIENTIFIC REALISM by J. J. C.Smart. STUDIES IN METAPHILOSOPHY by Morris Lazerowitz. REASON, ACTION AND MORALITY by J. Kemp. THE HIDDEN GOD: A Study of Tragic Vision in the PensleIof Pascal and the Tragedies of Racine by Lucien Goldmann, trans. from the French by P. Tbody. THE EXPLANATION OF BEHAVIOUR by Charles Taylor. Q....~ THE STRATIFICA TION OF BEHAVIOUR: A System of Definitions Propounded e~ LONDON and Defended by David S. Shwayder. STUDIES IN PLATO'S METAPHYSICS edited by R. E. Allen. ROUTLEDGE & KEGAN PAULj NEW YORK: THE HUMANITIES PRESS /lC1 r. (' First published I!JOJ ~ Routledge & Kegan Paul Ltd Broadwf!Y Hottse, 63-74 Carter Lane London, E.C.4 CONTENTS Printed in Great Britain ~ Richard CIf!Y (The Chaucer Press), Ltd PREFACE pagevii Bungf!Y, Suffolk INTRODUCTION ix @ Routledge & Kegan Paul Ltd I!JOJ I. THE PHILOSOPHICAL ECONOMY OF THE THEORY OF ~~~{!9J6} This book mf!Y not be reproduced H. F. Chermss I in atryform without permission from ProfeSSOT i" the Institute for AdvanmJ S tmly the publisher. II. LOGQ~_.!ND__~Q.!\.!I_S_}~_~~~!9(1954) R. C. Cross R.6gim ProfesSOT of Logic in the U"iversity of Aberdeen III. LOGOS AND FORMS IN PLATO: A REPLY TO PROFESSOR ---cRosi{i916r-"---''''----- r~ R. S. Bluck H ~ Lat, Senior Ltcturer in Greek i" the University of Manchester g 00 PARTICIPATION AND PREDICATION IN PLATO'S MIDDLE DIALOGUES (1960) 1 {R'. R. E. Allen 43 P q ProfesSOT of Philosophy and Classics in I"diana University C)' ---...- 'SIS V. MATHEMATICS AND DIALECTIC IN THE REPUBLIC VI-VII (1932) F. M. Cornford 61 Late Laurence ProfesSOTof A"cient Philosophyi" the University of Cambridge ,"VI. PLATO'S PARMENIDES (1939) Gilbert Ryle 97 Waynflete Prof61SOTof Metaphysical Philosophy i" the University of Oxford

,' tVII. PLATO'S PARM.ENIDES (1959) 1 ." .l . . . 149 -,.'.. . W. G. Runcl.11UUl /. . Formerly Fellolll of Trinity Collige, Caf11bridge :}VIII. KNOWLEDGE AND FORM~ IN.piA"~O'S THEAETETUS . . , (1951) . Winifred F. Hicken. Fellolll and Tutor in Classirs, Lady Margaret Hall, Oxford . .. IX. SYMPLOKE ElDON (1955) J. L. Ackrill 199 Fellolll, Tutor, and Ltcturer in Philosophy, BrasenoseCollege, Oxford V CONTENTS

X. PLATO AND THE COPULA: SOPHIST z~ 1-9 (1957) J. L. Ackrill page Z07 XI. PLATO'S DESCRIPTION OF DIVISION (19~4) A. C. Lloyd PREFACE Profmor of Philosophy in the University of Liverpool XII. THE THIRD MAN ARGUMENT IN THE PARMENIDES (1954) Gregory Vlastos 2'1 thanks are due to the Clarendon Press for permission to Stllart Proftmr o/Philosophy in Princeton University blish. articles XI, XVI, XVIII, XX, which originally ap-

XIII. THE THIRD MAN AGAIN (1956) , ed in The ClaJlicalQllarler!J; to The Johns Hopkins Press P. T. Geach z65 articles I and XVII, which originally appeared in The American Reader in Logic in the University of Birmingham 'Ill of Philology; to the Harvard University Press for article XIV. POSTSCRIPT TO THE THIRD MAN: A REPLY TO MR. GEACH which originally appeared in Harvard Studies in Classical (1956) logy; to the Institute of Classical Studies, University of Gregory Vlastos Z79 don, for article IX. which originally appeared in their Bulletin; XV. A PROOF IN THE PERI IDEON (1957) i e Editor of Mind for articles II, m. V, and VI; to the G. E. L. Owen 'tors of The Philosophical Review for articles IV, XII, xm, XIV. Profmor of Andent Philosophy in the Univmity of Oxford ., ; and to the Societyfor the Promotion of HellenicStudiesfor (XVI. ~HE PLACE OF THE TIMAEUS IN PLATO'S DIALOGUES ,esVIII, X, and XV. which originally appeared in The JOllT'llal (1953) ellenic Studies. G. E. L. Owen 'bliography may be found in Professor Cherniss' articles in XVII. THE RELATION OF THE TIMAEUS TO PLATO'S LATER '111.4(1959) 5-~08, and 5 (1960) ~2.I-615' These contain a DIALOGUES (1957) ey of the literature on Plato from 195° to 1957, annotated and H. F. Cherniss 339 enienfiy arranged by topic; they mention the main con- XVIII. THE DISORDERLY MOTION IN THE TIMAEUS (1939) tions to Platonism in this century. Gregory Vlastos 379 Ishould like to express my gratitude to Mr. John L. Ackrill. XIX. NECESSITY AND PERSUASION IN PLATO'S TIMAEUS ofessor Alan H. Donagan. Mr. David J. Pudey. and Professor (1950) fegory Vlastos, for helpful criticism, encouragement. and advice; Glenn R. Morrow 'Professor W. K. C. Guthrie and Mr. E. J. Kenney. for other Adam Seybert Profmor of Moral and Infellerfual Philosophy in tIN dnesses; to Mr. Martin Mueller for the index locorum;and to Univmity of Pennsylvania , 'dianaUniversity. which kindly put at my disposal secretarial XX. PLATO'S THEISM (1936) ..ties which made the mechanical burdens of editing much R. Hackforth 439 Late Laurence Professor of Andent Philosophy in the Univmity of hter. My greatest debt. as always, is to Ann Usilton Allen, my Cambridge INDEX LOCORUM R.E.A.

vi vii