The Wealth of Nations by Part 4 Chapter 5 Page 22

that you frequently find there a profusion of plate in houses where there is nothing else which would, in other countries, be thought suitable or correspondent to this sort of magnificence. The cheapness of gold and silver, or what is the same thing, the dearness of all commodities, which is the necessary effect of this redundancy of the precious metals, discourages both the agriculture and manufactures of Spain and Portugal, and enables foreign nations to supply them with many sorts of rude, and with almost all sorts of manufactured produce, for a smaller quantity of gold and silver than what they themselves can either raise or make them for at home.

The tax and prohibition operate in two different ways. They not only lower very much the value of the precious metals in Spain and Portugal, but by detaining there a certain