it took marshall's opinion in marbury vs. madison to establish that power and we will learn about the great chief justice his vision and his battles to define america. the book is written by harlow giles unger, but educated historian, former distinguished visiting fellow in american history at george washington mount vernon he has appeared frequently on the history channel and our favorite channel c-span, spoken extensively and is the author of three works on early american history and ten biographies of the founding father including john hancock, george washington and john quincy adams. the new book is "john marshall: the chief justice who saved the nation". moderating our final discussion is judge david wecht, a great friend of the center and you are in very capable hands with him, he served on superior court of pennsylvania since 2012. before that he was trial judge on the court of common pleas, and he has presided over important cases, he has been an administrative judge and is incredibly excellent moderator. please join