Contemporary philosophical pluralism recognizes the inevitability and legitimacy of multiple ethical perspectives and values, making it difficult to isolate the higher-order principles on which to base a theory of justice. Rising up to meet this challenge, Rainer Forst, a leading member of the Frankfurt School's newest generation of philosophers, conceives of an "autonomous" construction of justice founded on what he calls the basic moral right to justification.

Forst begins by identifying this right from the perspective of moral philosophy. Then, through an innovative, detailed critical...