Wealth compressed into the convenient form of gold brings one disadvantage. Unless well hidden or protected, it is easily stolen. In early civilizations a temple is considered the safest refuge; it is a solid building, constantly attended, with a sacred character which itself may deter thieves. In Egypt and Mesopotamia gold is deposited in temples for safe-keeping. But it lies idle there, while others in the trading community or in government have desperate need of it. In Babylon at the time of Hammurabi, in the 18th century BC, there are records of loans made by the priests of the temple. The concept of banking has arrived. Banking activities in Greece are more varied and sophisticated than in any previous society. Private entrepreneurs, as well as temples and public bodies, now undertake financial transactions. They take deposits, make loans, change money from one currency to another and test coins for weight and purity. They even engage in book transactions. Moneylenders can be ...