[Incommensurability, Incomparablility, and Practical Reason] is not only an extraordinary collection of all-stars, it contains original papers by just about all the all-stars that have been most insightful in helping us think about issues of incommensurability...Everyone with a real interest in incommensurability must closely study this book.
   --David Sobel, Philosophical Quarterly

Ruth Chang is Assistant Professor of Philosophy, Rutgers University, New Brunswick.