This introduction presents an overview of key concepts covered in the subsequent chapters of this book. The book concerns the non-dominant groups and individuals who are excluded from civil society. It should be noted that the legal hybridity that Menski has observed goes deeper than double marriages. The idea of hybrid legal systems is considered in greater detail. The book attempts to address the question of how we can develop the legal responses to diversity without, it must be admitted, actually providing any new legal responses. It builds upon the diversity-conscious form of justice by arguing that pluralism also has significant implications for the ways that nation-states are theorised. The book demonstrates that human rights do not fully meet the challenges of justice in diverse societies. The arguments and claims the respond to a need to ensure that the normative foundations are sound before we provide answers that solve the problems of diversity.