"Wealth grows wherever men exert energy," Arkad replied. "If a rich man builds him a new palace, is the gold he pays out gone? No, the brickmaker has part of it and the laborer has part of it, and the artist has part of it. And everyone who labors upon the house has part of it Yet when the palace is completed, is it not worth all it cost? And is the ground upon which it stands not worth more because it is there? And is the ground that adjoins it not worth more because it is there? Wealth grows in magic ways. No man can prophesy the limit of it. Have not the Phoenicians built great cities on barren coasts with the wealth that comes from their ships of commerce on the seas?"

-- The Richest Man in Babylon