There were some people with a gift for conviction - a talent for cutting a line through the jumbled phenomena of world affairs and saying, 'I'm in: this is my position.' Audrey had it. All of the Litvinoffs had it, to some extent. It was a genetic thing, perhaps. Jean had seen a film once, about a troop of French soldiers in World I who were charged with getting a cannon to their fellow soldiers, trapped under enemy fire. For weeks, they carted the cannon around the countryside as their number slowly dwindled. Some were killed. Some deserted. Some collapsed from exhausted. But no matter how desperate the situation became - even when it emerged that the cannon itself was probably defective - the captain of the group kept going forward, refusing to give up. Audrey's attachment to her dogma was a bit like that, Jean thought. For decades now, she had been dragging about the same unwieldy burden of a priori convictions, believing herself honor-bound to protect them against destruction at all costs. No new intelligence, no rational argument, could cause her to falter in her mission.