This book is a conversation between Grimm and three scholars of constitutional law - Oliver Lepsius, Christian Waldhoff, and Matthias Rossbach - on his background, his childhood under the Nazi regime and the ruins of post-war Germany, his education in Germany, France, and the United States, his academic achievements, the main subjects of his research, his experience as a judge on a leading constitutional court (especially in the time of pivotal changes in the world after the fall of the Berlin Wall), and his views on actual challenges for law and society.