The Wealth of Nations by Part 4 Chapter 3 Page 68

or ten, or twenty individuals, should regulate the judgment of one, or ten, or twenty millions, and should make a whole nation regard the riches of its neighbours as a probable cause and occasion for itself to acquire riches. A nation that would enrich itself by foreign trade is certainly most likely to do so when its neighbours are all rich, industrious, and commercial nations. A great nation surrounded on all sides by wandering savages and poor barbarians might, no doubt, acquire riches by the cultivation of its own lands, and by its own interior commerce, but not by foreign trade. It seems to have been in this manner that the ancient Egyptians and the modern Chinese acquired their great wealth.

The ancient Egyptians, it is said, neglected foreign commerce, and the modern Chinese, it is known, bold it in the utmost