How should we act? How should the world be organised? This new anthology on Kant's practical philosophy guides the reader from the general question of the nature of reasons and rationality in Kant's philosophical system to the Kantian task of promoting justice and peace at the global level. Contributions in this volume show how the Kantian idea of reason as a source of normativity is grounded, and which implications and applications the Kantian approach might bring about. The volume covers three areas: meta-ethics, political thought and theory, and applied politics. Although these are different spheres of thought, they are interconnected in an fundamental way through Kant's account of normativity as derived from reason. The volume provides an overview of recent debates in Kant scholarship and ground-breaking new applications of Kant's theory to current affairs.

This work elaborates the rationalist thesis of integrity, which suggests that the concepts of law, the state, and justice can neither be divorced from, nor be assimilated into each other. This evidently refutes the positivist thesis of separation which breaks off the cord between law and the state, on the one hand, and the moral standpoint of justice, on the other hand. However, the thesis of integrity also opposes the theses of assimilation which either assimilate law and political authority into morality (the moralist naivety), or, reversely, reduce law and justice into brute political force (the realist cynicism). In brief, the integral view gives each element its due in the nexus of law, the state and the universal moral idea of justice (i.e. human rights). In this work, this view is elicited through a comparative critical examination of three theories, each of which is taken as representing a particular approach beyond legal-moralism. These are Hans Kelsen's legal-positivism, Carl Schmitt's realism, and Otfried Hoffe's Kantian rationalism. Eventually, the book is intended to be beneficial to those who are interested in political and legal philosophy.