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This book is a work of fiction. Any references to historical events, real people, or real locales are used fictitiously.

Copyright © 2015 by Actes Sud
First publication 2017 by Europa Editions

Translation by Howard Curtis
Original Title: Le principe
Translation copyright © 2016 by Europa Editions

All rights reserved, including the right of reproduction in whole or in part in any form.

Cover Art by Emanuele Ragnisco
www.mekkanografici.com

Cover photo: courtesy of Werner Heisenberg’s heirs

ISBN 9781609453602