But there is another way in which that metaphor of the forked road will make the position plain. Medieval society was not the right place; it was only the right turning. It was only the right road; or perhaps only the beginning of the right road. The medieval age was very far from being the age in which everything went right. It would be nearer the truth I mean to call it the age in which everything went wrong. It was the moment when things might have developed well, and did develop badly. Or rather, to be yet more exact, it was the moment when they were developing well, and yet they were driven to develop badly. This was the history of all the medieval states and of none more than medieval Jerusalem; indeed there were signs of some serious idea of making it the model medieval state. Of this notion of Jerusalem as the New Jerusalem, of the Utopian aspect of the adventure of the Latin Kingdom, something may be said in a moment. But meanwhile there was a more important part played by Jerusalem, I think, in all that great progress and reaction which has left us the problem of modern Europe. And the suggestion of it is bound up with the former suggestion, about the difference between the goal and the right road that might have led to it. It is bound up with that quality of the civilisation in question, that it was potential rather than perfect; and there is no need to idealise it in order to regret it. This peculiar part played by Jerusalem I mention merely as a suggestion; I might almost say a suspicion. Anyhow, it is something of a guess; but I for one have found it a guide.