I met Robert Aumann (*1930) in his office at the Federmann Center for the Study of Rationality at the Hebrew University in Jerusalem. The place has an interesting architecture; it is a square building with a large opening in the middle, so everyone could basically see everyone else’s office, enabling a lot of interaction. The green plants in the building nicely complemented the brown wood, together giving the feeling of comfort. Aumann’s office was located in a central spot in the building. When I entered, he sat behind his desk, surrounded by hundreds of books and papers. Rather small, but with a long white beard and a black suit, he nearly blended in with the shelves. Throughout the whole interview, Aumann remained friendly but at the same time notably affirmative, clearly having strong views – particularly on the status and relevance of game theory not only as a scholarly enterprise but also a basis for political advice and ultimately as a tool to support one’s political views.