Jim Cullen is Chair of the History Department at the Fieldston School in New York and a book review editor at the History News Network. He is the author of a dozen books, including Imperfect Presidents: Tales of Misadventure and Triumph (2007), Essaying the Past: How to Read, Write and Think about History, 2nd edition (Wiley-Blackwell, 2012), and Sensing the Past: Hollywood Stars and Historical Visions (2013).