The fundamental question of legal philosophy is: Can what we or others consider immoral still be binding for us or others? The conditions under which this is permissible constitute the legal relationship. In such a relationship, we grant each other rights that can be enforced against our will. Which rights these should be is a matter of philosophical and political debate. To resolve the relevant controversies, there is the democratic constitutional state. This is a nation-state tamed by supranational integration. The introductory volume by Alexander Somek provides a historical and systematic introduction to these topics and discusses authors such as Aristotle, Hobbes, Montesquieu, Rousseau, Madison, Kant, Mill, Marx, Tocqueville, Radbruch, and Rawls.