The chapter introduces a new way to understand administrative law by focusing on four key values: individual self-realisation, good administration, electoral legitimacy, and decisional autonomy. By looking at case law from different countries, the chapter shows how these values shape the rules around reviewing administrative actions. This approach helps us better understand how administrative law works and can guide future changes in the law. The chapter also argues that this values-based framework supports the legitimacy of contemporary administrative law and helps individuals, public administration, and democratic systems thrive.