This collection offers an intimate window into the life and mind of Richard H. Popkin, a towering figure in the study of scepticism and the history of ideas. Through an exploration of his private letters and papers, this book reconstructs the 'private republic of letters' that Popkin built, showcasing his connections to the greatest philosophical minds of his generation. The contributors provide a fascinating analysis of his career, his Jewish identity, and his pioneering work in historical scholarship. By examining these personal archives, you will gain a deeper understanding of how an individual’s curiosity and correspondence can shape academic landscapes. This book is a fitting tribute to a brilliant scholar, offering readers a unique blend of biography, intellectual history, and the human story behind the philosophy. It is an essential addition for those interested in the development of modern philosophical thought.