Is there anything new to be said about T.E. Lawrence? I mean, really. In the century since his stirring exploits in the Arabian desert we have had all manner of biographies, from simpering hagiography to heartless hatchet job. We have had Lawrence the colonial hero and faithful imperial servant; Lawrence the linguist, explorer and spy, pioneer of guerrilla warfare; Lawrence the Machiavellian betrayer of the Arabs; Lawrence the preening, self-mythologising sado-masochist.