Dieter Grimm is one of Germany’s foremost scholars of constitutional law and theory with a high international reputation and an exceptional career. He teaches constitutional law at Humboldt University Berlin and did so simultaneously at the Yale Law School until 2017. He was one of the most influential justices of the German Constitutional Court where he served from 1987 to 1999 and left his marks on the jurisprudence of the Court, especially in the field of fundamental rights. He directed one of the finest academic institutions worldwide, the Wissenschaftskolleg zu Berlin (Institute for Advanced Study). He is also well known as a public intellectual who speaks up in questions of German politics and European integration. This book contains a conversation that three scholars of constitutional law led with Dieter Grimm on his background, his childhood under the Nazi regime and in destroyed post-war Germany, his education in Germany, France, and the United States, his academic achievement, the main subjects of his research, his experience as a member of a leading constitutional court, especially in the time of seminal changes in the world after the fall of the Berlin Wall, and his views on actual challenges for law and society. The book is an invaluable source of information on an outstanding career and the functioning of constitutional adjudication, which one would not find in legal textbooks or treatises. Oxford University Press previously published his books on Constitutionalism. Past, Present, and Future (2016) and The Constitution of European Democracy (2017).