Published in the United States by Princeton University Press, 41 William Street, Princeton, New Jersey 08540 press.princeton.edu

First published in 2012 by Vintage, Random House, 20 Vauxhall Bridge Road, London SW1V 2SA www.vintage-books.co.uk

Copyright © 1983 by Andrew Hodges
Preface to the 2012 Centenary edition copyright © 2012 by Andrew Hodges
Foreword copyright © 2000 by Douglas Hofstadter

All Rights Reserved

First published by Burnett Books Ltd in association with
Hutchinson Publishing Group, 1983
Unwin Paperbacks edition, 1985
Reprinting, 1985 (twice), 1986, 1987 (twice)
First published by Vintage in 1992

Library of Congress Control Number 2012935958
ISBN 978-0-691-15564-7

Printed on acid-free paper. ∞

Printed in the United States of America

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