“It must have been pretty wonderful to have lived in the years, say, between 1870 and 1914, when peace was the normal condition and people really were appalled at the idea of war, and believed there'd never be a big one. A big one was impossible, they used to say. It would cost too much. It would disrupt world trade and bankrupt everybody. Even after the first World War people didn't accept war as normal. They had to call it The War to End War or we wouldn't have fought it.”