When he was asked why he killed three women, Steven Griffiths, the 'crossbow cannibal,' said, "I don't know. Sometimes you kill someone to kill yourself, or part of yourself... I don't know. I don't know. I don't know. I'm misanthropic. I don't have time for the human race." 1 Steven Griffiths was told by the judge that he would never be released. But Griffiths knew the judge would say that because Griffiths was working on his PhD in Criminology. There were many things Griffiths knew, but he found his own motive hard to find. The motives he did give sounded like they were recited from one of his text books. Stephen Griffiths I once sat next to a senior psychologist at a dinner party. I asked him why people end up doing the most horrendous things. He turned to me and said, "Sin." I was expecting more, something about dysfunction, about pathology, about genetic disposition, but that was all he said. Sin. It strikes me that Ste...