If we were to-morrow morning snowed up in the street in which we live, we should step suddenly into a much larger and much wilder world than we have ever known. And it is the whole effort of the typically modern person to escape from the street in which he lives. First he invents modern hygiene and goes to Margate. Then he invents modern culture and goes to Florence. Then he invents modern imperialism and goes to Timbuctoo. He goes to the fantastic borders of the earth. He pretends to shoot tigers. He almost rides on a camel. And in all this he is still essentially fleeing from the street in which he was born; and of this flight he is always ready with his own explanation. He says he is fleeing from his street because it is dull; he is lying. He is really fleeing from his street because it is a great deal too exciting. It is exciting because it is exacting; it is exacting because it is alive. He can visit Venice because to him the Venetians are only Venetians; the people in his own street are men. He can stare at the Chinese because for him the Chinese are a passive thing to be stared at; if he stares at the old lady in the next garden, she becomes active. He is forced to flee, in short, from the too stimulating society of his equals--of free men, perverse, personal, deliberately different from himself. The street in Brixton is too glowing and overpowering. He has to soothe and quiet himself among tigers and vultures, camels and crocodiles. These creatures are indeed very different from himself. But they do not put their shape or colour or custom into a decisive intellectual competition with his own. They do not seek to destroy his principles and assert their own; the stranger monsters of the suburban street do seek to do this.
I think church as family is probably one of the most important NT metaphors needed today. However, that is family as defined by Chesterton. (Remember that he was writing a hundred years ago, what do you think he would say now!)