In short, the story of these sects is not one of straight lines striking outwards and onwards, though if it were they would all be striking in different directions. It is a pattern of curves continually returning into the continent and common life of their and our civilisation; and the summary of that civilisation and central sanity is the philosophy of the Catholic Church. To us, Spiritualists are men studying the existence of spirits, in a brief and blinding oblivion of the existence of evil spirits. They are, as it were, people just educated enough to have heard of ghosts but not educated enough to have heard of witches. If the evil spirits succeed in stopping their education and stunting their minds, they may of course go on for ever repeating silly messages from Plato and doggerel verses from Milton. But if they do go a step or two further, instead of marking time on the borderland, their next step will be to learn what the Church could have taught. To us, Christian Scientists are simply people with one idea, which they have never learnt to balance and combine with all the other ideas. That is why the wealthy business man so often becomes a Christian Scientist. He is not used to ideas and one idea goes to his head, like one glass of wine to a starving man. But the Catholic Church is used to living with ideas and walks among all those very dangerous wild beasts with the poise and the lifted head of a lion-tamer. The Christian Scientist can go on monotonously repeating his one idea and remain a Christian Scientist. But if ever he really goes on to any other ideas, he will be so much the nearer to being a Catholic.