A family was once shipwrecked upon a large island. There were five members of the family all able to work, and by a proper division of their labor they managed to provide themselves with food, clothes, and shelter. After a time another family was shipwrecked upon the same island. The second family followed the example of the first, and each prospered independently of the other. During the next year a third and fourth family were also stranded upon the same island, for it was unmarked on the charts and many a ship had met its fate upon its rocky shores. As each family developed and multiplied, each having selected a different part of the island, four little villages, some distance apart, sprang up. During the daily hunts several other similar villages were discovered in the interior, each representing a shipwrecked family of previous years. As time wore on, and each village grew, and other shiploads of people from all nations were deposited upon the island, it came to pass that the island became quite densely inhabited, and the villages almost touched one another at their outskirts. One day a philosopher mysteriously made his appearance; and after touring the island, he asked all of the inhabitants to meet him in an open field. When the appointed day came, the entire adult population was there, and the philosopher spoke as follows: "You have a fine country here, and fine people. You are industrious and simple. Each little village is independent of the other villages, for each can provide itself with everything its people actually need. You never ask favors from your neighboring villages. Each village has its own corn field, its own carpenters, woods, cows, sheep, horses and stores. But I find that you have no music, no books, no art, no places of amusement and very little ingenuity. You all work from morn till night and you have no time for these things. It is a constant, ceaseless struggle for all of you to keep body and soul together. Each of you men and women is an isolated unit. Each village is an isolated unit. You are all isolated from the great commercial countries far beyond the seas. Now, in travelling through your island, I found that one village had a coal mine and all the people there used coal for fuel, while all the other villages have to hew great trees, chop them up, and burn wood, in order to get heat. In one village I found oil wells and the people there burn oil, while all the other villages have to use bullrush torches. In one village I found the soil of clay, so that the people made their houses of bricks, while the other villages have to use blocks of wood, or logs. In another village I found iron ore and their people have sharp tools, while other villages have to use sharpened stones. And so on, for I found each village has some peculiar and natural advantage over the other. Now, my friends, why do you keep these God-given advantages to yourselves? You villagers who have coal know that there is enough for