“When I was admitted to the University of Leiden, I expected to be presented with a single narrative of events and their significance and one explanation for why everything had happened as it did. Instead, the professors began every course with a central question; spent a lot of time on definitions and their importance; then presented key thinkers and their critics over time. My job as a student was to grasp the central question; to learn about the thinkers, their theories of power, political elites, mass psychology and sociology, and public policy; the methods by which they got to their conclusions; their critics and their methods of criticism. The point of all these exercises was to learn to improve on old ways of doing things through critical thinking.”