The historian must have some conception of how men who are not historians behave. Otherwise he will move in a world of the dead. He can only gain that conception through personal experience, and he can only use his personal experiences when he is a genius.
E. M. ForsterThere is much good luck in the world, but it is luck. We are none of us safe. We are children, playing or quarrelling on the line.
E. M. Forster