An Empire for Liberty?, PBC television show "Uncommon Knowledge." Filmed on July 16, 2003. A Less Perfect Union? PBC television show "Uncommon Knowledge." Filmed on July 16, 2003. Conversation with Paul Johnson, Timothy Garton Ash Senior Fellow, Hoover Institution; and Kurt A. Körber Senior Research Fellow in Contemporary European History, Oxford University. On American Liberty. Reprinted with permission from The Freeman, a publication of The Foundation for Economic Education, Inc., June 1996, Vol. 46, No. 6. Paul Johnson: The Robbie Low Interview. May 12, 1996. Time 100: Historian Paul Johnson Transcript from April 8, 1998, on Paul Johnson's article on Margaret Thatcher.