THE CASTLE AND THE CITY
It is difficult for you to imagine a world without money. In a modern city one cannot possible live without money. All day long you carry a pocket full of small discs of metal to "pay your way." You need a nickel for the street-car, a dollar for a dinner, three cents for an evening paper. But many people of the early Middle Ages never saw a piece of coined money from the time they were born to the day of their death. The gold and silver of Greece and Rome lay buried beneath the ruins of their cities. The world of the migrations, which had succeeded the Empire, was an agricultural world. Every farmer raised enough grain and enough sheep and enough cows for his own use.