"This book is a collection of articles commemorating the late John S. Bell, the brilliant physicist who was one of the originators of the second quantum revolution … . I have a hunch that this marvellous volume is destined to become a classic in the history of physics because it contains the thoughts and memoirs of practically all of the principal players who were involved with early developments … . they all write with great clarity and insight. … a marvellous read!" (A G Klein, The Physicist, Vol. 41 (1), 2003)

"Quantum [Un]speakables is the proceedings volume of a conference held at the University of Vienna in November 2000 to commemorate the 10th anniversary of Bell’s death. … The contributions focus very much on personal recollections … . The recollections make this book a valuable source both on John Bell the man and on the history of quantum physics between 1950 and 1990." (Nino Zanghi and Roderich Tumulka, American Scientist, September/October, 2003)

"This excellent collection of essays in commemoration of JS Bell is the result of the conference organized by the University of Vienna, 10-14 November, 2000. … 35 leading scientists from all over the world contributed to this book. … By reading this book, it is getting clear that Bell was among the most brilliant physicists we had. Indeed a very exciting book, from the side of history as well as from the side of modern physics." (K. Trautmann, Optik, Vol. 144 (2), 2003)