Babylon was the wealthiest and most prosperous city in the ancient world. About four thousand years ago, the inhabitants of Babylon, on the Euphrates banks, with their empty gardens, impenetrable walls, wide roads, and magnificent temples, were also the world’s wealthiest people at that time. And the richest was Arcad. He inherited nothing, not suddenly by chance. He was merely an ordinary scribe. In his strong desire to become rich, he gradually increased his wealth by following some simple rules.…