Facticity and Validity is one of Jürgen Habermas’s principal works. In it, he proposes an innovative justification for the principles of the democratic constitutional state, and, at the same time, sums up his thinking on social theory and ethics (i.e. the theory of communicative action and discourse ethics). This volume engages in a close reading of the work, and each chapter is summarized, interpreted, and critiqued by renowned authors.