In the traditional law and development doctrine the main goal was economic, since the legal development was needed to enable economic growth. Today, strengthening of the rule of law links with a variety of goals as can be illustrated by the example of UN Sustainable Development Goals. The goal Nr. 16 is about promoting just, peaceful and inclusive societies. Law is, however, not only relevant for that one, but in fact needed for reaching all the other goals as well. The UN SDG creates interestingly a common reference to all legal orders with their distinctive concepts of rule of law, be they of common law type or civil law, French 'droit d'état' or German 'Rechtsstaat', or rule of law with Chinese characteristics. It is worth noting that a 'comparative approach' seems to be on the rise. Rule of law index has been introduced, and the Venice Commission of the Council of Europe has introduced a Rule of Law checklist. Most important seems to be that abuse of power would be prevented. I discuss these issues against the background of Amartya Sen's The Idea of Justice.