No book has exposed my own double standard to me more clearly than Dancer by Colum McCann. A fictional portrait of Rudolf Nureyev, told from many angles in many different voices, it opens with one of the best short evocations of battle that I have ever read, as Russian soldiers return from the front at the end of the Second World War. The picture narrows to an industrial town in the remote hinterland where a boy watches the trains come in, waiting for his father. Then we see him being handed through a hospital window to perform folk dances for the wounded; he is a prodigy, who makes even the human wrecks drinking meths draw breath.