“The importation of gold and silver is not the principal, much less the sole benefit which a nation derives from its foreign trade.”
Source: (1776), Book IV, Chapter I, p. 479.
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Adam Smith 175
Scottish moral philosopher and political economist 1723–1790Related quotes

Source: Barbarian Sentiments - How The American Century Ends (1989), Chapter 5, Nationalism, p. 149.

Introduction, in Hirst (1909), p. 312
The National System of Political Economy (1841)

Source: Commonplace book, P. 195

“they possess most gold and silver, by which war, like everything else, flourishes.”
Book VI, 6.34; "they have abundance of gold and silver, and these make war, like other things, go smoothly" ( trans. http://www.classicpersuasion.org/pw/thucydides/jthucbk6rv2.htm Benjamin Jowett)
History of the Peloponnesian War, Book VI

Testimony Before the Committee on Banking and Financial Services, U.S. House of Representatives July 24, 1998 http://www.federalreserve.gov/boarddocs/testimony/1998/19980724.htm.
1990s

The Future of Civilization (1938)

“When war becomes a trade, it benefits, like all other trades, from the division of labour.”
Source: A Treatise On Political Economy (Fourth Edition) (1832), Book III, On Consumption, Chapter VI, Section II, p. 429

“Not all treasure is silver and gold, mate”