News reports on the trial of Anders Behring Breivik, the Norwegian who murdered 77 people on the island of Utøya, near Oslo, last year, are being filed from a different moral universe. In The War of the Worlds, H.G. Wells imagined that Martian “intellects vast and cool and unsympathetic” were scrutinising and studying earthlings “as narrowly as a man with a microscope might scrutinise the transient creatures that swarm and multiply in a drop of...