The Wealth of Nations by Part 1 Chapter 11 Page 91

improvement is bestowed, but contributes likewise to increase that of many other lands by creating a new demand for their produce. That abundance of food, of which, in consequence of the improvement of land, many people have the disposal beyond what they themselves can consume, is the great cause of the demand both for the precious metals and the precious stone, as well as for every other conveniency and ornament of dress, lodging, household furniture, and equipage.

Food not only constitutes the principal part of the riches of the world, but it is the abundance of food which gives the principal part of their value to many other sorts of riches. The poor inhabitants of Cuba and St. Domingo, when they were first discovered by the Spaniards, used to wear little bits of gold as ornaments in their hair and other parts of their