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We connect Adam Smith’s moral psychology to the modern idea of transaction costs and argue that the biggest frictions in markets start with the cost of understanding other people. We show how sympathy, propriety, self command, and reputation turn separate perspectives into workable cooperation and why justice is the real precondition for a stable commercial order.
• why transaction costs always exist and why institutions matter when exchange is costly
• a brief history of the term from Coase to an early use in Scitovsky
• transaction costs as asymmetric information and the cost of social coordination
• Smith’s epistemic distance and why sympathy requires imaginative effort
• propriety as social calibration through the impartial spectator
• self command as the price of being socially intelligible
• commerce as a practical school for restraint, trust, and predictability
• the prudent man as a model of conduct that reduces suspicion and monitoring
• Buchanan’s moral community, moral order, and moral anarchy as lenses on social stability
• why society can survive without beneficence but not without justice
• a listener’s college admissions case where interviews act as a separating equilibrium and improve aid allocation

Links:

• Liberty Fund eBook--Theory of Moral Sentiments (PAGES DO NOT MATCH UP WITH PRINT EDITION!)
• TAITC with Steve Medema, on Coase and Transaction Costs
• Dan Klein and Russ Roberts on Theory of Moral Sentiments
• Tibor Scitovsky, 1940, Economica paper
• Gustavo Dudamel’s ‘the wealth of nations’ Melds Opera and Economics - Bloomberg

You can follow Mike Munger on Twitter at @mungowitz

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We assess Adam Smith’s enduring ideas—moral authorization of commerce, division of labor, emergent order—and confront where his optimism breaks: how democratic politics and business fuse to create monopoly privilege. The result is a maintenance‑intensive commercial order that needs competition defended, not assumed.

• presumption for markets under secure property, justice, and competition
• division of labor as the main engine of productivity and growth
• invisible hand reframed as emergent order, not automatic virtue
• critique of mercantilism, monopoly privilege, and rent seeking
• limited but real state functions: defense, justice, public works, education
• motivational symmetry and public choice constraints on government
• trade clarity: buy where cheaper, specialize, gains from exchange
• competition as a public good that must be defended

Happy 250th birthday, Wealth of Nations

You can follow Mike Munger on Twitter at @mungowitz

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We walk through Book Five of The Wealth of Nations to map a state that defends, adjudicates, and builds wisely, then pays for it without killing growth. From militias to standing armies, fee-based courts to salaried judges, turnpikes to basic schooling, and taxes to debt, we test what holds up now.

• defense as a professional, civilian-controlled standing army
• justice as predictable law and salaried judges
• public works funded by user fees where feasible
• education to offset division of labor’s civic costs
• incentives in universities and churches
• four tax maxims and ability to pay
• why land taxes beat mobile capital taxes
• state property and monopolies as bad revenue
• debt, consols, and fiscal illusion
• Smith with Hume and public choice echoes

We do have one more episode, which is a summing up and taking stock of why the Wealth of Nations still matters today. It will post Tuesday, February 24th, 2026.

You can follow Mike Munger on Twitter at @mungowitz