The Wealth of Nations by Part 4 Chapter 5 Page 20

smuggling, and raise the value of those metals in other countries so much more above what it is in their own by the whole amount of this expense.

When you dam up a stream of water, as soon as the dam is full as much water must run over the dam-head as if there was no dam at all. The prohibition of exportation cannot detain a greater quantity of gold and silver in Spain and Portugal than what they can afford to employ, than what the annual produce of their land and labour will allow them to employ, in coin, plate, gilding, and other ornaments of gold and silver. When they have got this quantity the dam is full, and the whole stream which flows in afterwards must run over. The annual exportation of gold and silver from Spain and Portugal accordingly is, by all accounts, notwithstanding these restraints, very near equal to