Can it still be possible in the age of pluralism to establish a sufficiently complex theory of political and social justice based on a single normative principle? This book makes such an attempt by bringing together the essential elements of an autonomous construction of justice. At its core is an individual moral right to justification, which is elaborated from a moral philosophical perspective in the chapters of the first part. In the second part, the central components of political and social justice—regarding the fundamental concepts of freedom, democracy, equality, and tolerance—are analyzed and interconnected on this basis. They form the core of a critical political theory of justice, in which the question of the power of justification is central.