Abstract All discussants of this book symposium on the monograph Constitutional Imaginaries address different aspects of constitutionalism beyond national and international limits and engage with the concepts of transnational law and global society to test and contest the book’s central argument according to which specific European constitutional imaginaries are internally constituted by different social systems and therefore paradoxically represent the unity of European society through their specific semantics. In this rejoinder, I focus on some overlapping themes, namely the process of social differentiation, its impact on both social and legal pluralism, and the paradox of legitimation in societal constitutionalism to respond to their comments and criticisms.