Philip Dodd talks to playwright David Edgar and biographer Gita Sereny about one of the National Theatre's most ambitious productions of recent decades - David Edgar 's stage adaptation of Sereny's acclaimed life of Albert Speer , Hitler's favourite architect and the second most powerful man in Nazi Germany. How did
Speer's devotion to Hitler blind him to the crimes of the Holocaust? And a new biography urges reassessment of one of the towering figures of philosophy- Hegel.