The Wealth of Nations by Part 4 Chapter 7 Page 26

A project of commerce to the East Indies, therefore, gave occasion to the first discovery of the West. A project of conquest gave occasion to all the establishments of the Spaniards in those newly discovered countries. The motive which excited them to this conquest was a project of gold and silver mines; and a course of accidents, which no human wisdom could foresee, rendered this project much more successful than the undertakers had any reasonable grounds for expecting.

The first adventurers of all the other nations of Europe who attempted to make settlements in America were animated by the like chimerical views; but they were not equally successful. It was more than a hundred years after the first settlement of the Brazils before any silver, gold, or diamond mines were discovered there. In the English, French, Dutch, and