"The propensity to truck, barter and exchange one thing for another is common to all men, and to be found in no other race of animals"
About this Quote
Smith isn’t just describing a quaint habit of commerce; he’s smuggling in a theory of human nature that makes markets feel less like an invention and more like a destiny. By calling trade a “propensity,” he frames exchange as instinctive, almost bodily - something people do the way they speak or socialize. That rhetorical move matters: if markets are natural, then the sprawling commercial society Smith is watching take shape in 18th-century Britain doesn’t need moral permission. It needs room to operate.
The line’s real edge is the comparison class: “no other race of animals.” Smith is working with the Enlightenment toolkit here, using natural history to draw a hard boundary around the human. Animals may cooperate, hoard, or even gift, but they don’t bargain; they don’t negotiate terms with strangers. That’s the subtextual leap: exchange implies not merely desire but a certain kind of mind - foresight, trust calibration, and the ability to imagine equivalence between unlike things. Money, contracts, and price become extensions of cognition.
Context sharpens the intent. Wealth of Nations is published in 1776, when Britain’s commercial networks, colonial extraction, and early industrialization are turning “barter” into a national worldview. Smith’s claim also quietly rebukes older moral suspicion of trade as greed. He’s not sanctifying merchants; he’s repositioning self-interest as socially productive when routed through exchange. The charm is its simplicity: one sentence converts the marketplace from a potentially corrupting arena into the signature technology of human cooperation.
The line’s real edge is the comparison class: “no other race of animals.” Smith is working with the Enlightenment toolkit here, using natural history to draw a hard boundary around the human. Animals may cooperate, hoard, or even gift, but they don’t bargain; they don’t negotiate terms with strangers. That’s the subtextual leap: exchange implies not merely desire but a certain kind of mind - foresight, trust calibration, and the ability to imagine equivalence between unlike things. Money, contracts, and price become extensions of cognition.
Context sharpens the intent. Wealth of Nations is published in 1776, when Britain’s commercial networks, colonial extraction, and early industrialization are turning “barter” into a national worldview. Smith’s claim also quietly rebukes older moral suspicion of trade as greed. He’s not sanctifying merchants; he’s repositioning self-interest as socially productive when routed through exchange. The charm is its simplicity: one sentence converts the marketplace from a potentially corrupting arena into the signature technology of human cooperation.
Quote Details
| Topic | Money |
|---|---|
| Source | Adam Smith, An Inquiry into the Nature and Causes of the Wealth of Nations (1776), Book I, Chapter II ("Of the Principle which gives occasion to the Division of Labour"). |
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