Biographers are often thought to side with their subjects - so what does it mean to have written lives of two men thought to be rivals, even enemies? Adam Sisman reflects on his biographies of Hugh Trevor-Roper and A.J.P. Taylor, two British historians, and considers whether one has helped him understand the other.
Sisman is the author of "A.J.P. Taylor" and "Boswell's Presumptuous Task: The Making of the Life of Dr. Johnson," awarded the National Book Critics Circle Award for biography, as well as "Hugh Trevor-Roper: The Biography," which has earned worldwide acclaim.