Preface / George Lavan Weissman -- Introduction to the French edition / Pierre Frank -- Open letter to members of the University of Warsaw Sections of the United Polish Workers Party and the Union of Young Socialists / Jacek Kuron and Karol Modzelewski -- Reply to the Control Commission of the United Polish Workers Party / Antoni Zambrowski -- An open letter to Wladyslaw Gomulka and the Central Committee of the Polish Workers Party / Isaac Deutscher.