Williams’s behaviour looks like vainglorious attention-seeking, but it is also something much worse. To seek to undermine our legal system and the values on which it rests, in a spirit of unnecessary appeasement to an alien set of values, is a kind of treason. It is a betrayal of all those who struggled and died here, over the centuries, for freedom and equality under the rule of law and of their courage in the face of injustice and unreason. Theirs is the good that we should hold fast and so of all people should the Archbishop of Canterbury. Otherwise, what is he for?