Yet how hard it is to make the change effective! Long ages ago in the primeval jungle, the dogs' ancestors used to turn around three times in the thicket before they lay down, that they might make a comfortable spot to nestle in, and now your highbred Pekingese will turn around three times upon his silken cushion although there is no earthly reason why he should. So difficult is it to breed beasts and men out of their inveterate habits. So hard is it going to be to make men give up the idea that force is a secure foundation for international relationships. Yet somehow that change must be made. They are having trouble with the housing problem in Tokyo and the reason is simple. Tokyo is built on earthquake ground and it is insecure. You cannot put great houses on unstable foundations. One story, two stories, three stories--that is about as high as they dare go. But in New York City one sees the skyscrapers reaching up their sixty stories into the air. The explanation is not difficult: Manhattan Island is solid rock. If you are going to build great structures you must have great foundations. And civilization is a vast and complicated structure. We cannot build it on physical force. That is too shaky. We must build it upon spiritual foundations. There are those who suppose that this can be done by progress through the scientific control of life, and who treat religion as a negligible element. Such folk forget that while a cat will lap her milk contentedly from a saucer made of Wedgwood or china, porcelain or earthenware, and will feel no curiosity about the nature of the receptacle from which she drinks, human beings are not animals who thus can take their food and ask no questions about the universe in which it is served to them. We want to know about life's origin and meaning and destiny. We cannot keep our questions at home. We cannot stop thinking. If this universe is fundamentally physical, if the only spark of spiritual life which it ever knew is the fitful flame of our own unsteady souls, if it came from dust and to dust will return, leaving behind no recollection of the human labour, sacrifice and aspiration which for a little time it unconsciously enshrined, that outlook makes an incalculable difference to our present lives. For then our very minds themselves, which have developed here by accident upon this wandering island in the skies, represent the only kind of mind there is, and what we do not know never was thought about or cared for or purposed by anyone, and we, alone in knowing, are ourselves unknown.