Noah Feldman profiles the life and legal contributions of President Franklin Roosevelt’s Supreme Court appointees Felix Frankfurter, Hugo Black, Robert Jackson, and William Douglas. The four men began their tenures on the Court as friends, but their perspectives quickly diverged, and the widely-liberal view of the U.S. Constitution that President Roosevelt intended for them to promote was often internally challenged. Professor Feldman discussed these influential Justices with Dahlia Lithwick, senior editor of Slate online magazine and its Supreme Court reporter.