Out of the welter of life, a few people are selected for us by the accident of temporary confinement in the same circle. We never would have chosen these neighbors; life chose them for us. But thrown together on this island of living, we stretch to understand each other and are invigorated by the stretching. The difficulty with big city environment is that if we select—and we must in order to live and breathe and work in such crowded conditions—we tend to select people like ourselves, a very monotonous diet. All hors d’oeuvres and no meat; or all sweets and no vegetables, depending on the kind of people we are. But however much the diet may differ between us, one thing is fairly certain: we usually select the known, seldom the strange. We tend not to choose the unknown which might be a shock or a disappointment or simply a little difficult to cope with. And yet it is the unknown with all its disappointments and surprises that is the most enriching.