Montaigne's Fallacy
This article is part of the Intermediate course on Libertarianism and the Austrian School of Economics -> Mercantilism
Last updated: 2026-05-30
It is not a theorem in the mathematical sense (like a proven theorem), but an idea or philosophical claim. It is known mainly as:
- Montaigne’s Dogma
- Montaigne’s Fallacy
Ludwig von Mises was the one who gave it this name in his work Human Action, criticizing it harshly.
Origin
Michel de Montaigne (1533–1592), the famous French essayist of the Renaissance, wrote in his Essays a phrase that sums up the idea:
“No one profits except at another’s expense” or “One man’s profit is another man’s loss”
Montaigne held that in society, especially in the economic and commercial sphere, one person’s gain necessarily implies another’s loss. That is, he saw the economy as a zero-sum game.
What does this mean in practice?
According to this view:
- If a merchant makes money selling something, it is because the buyer lost.
- If a country grows rich through foreign trade, it is because another country was impoverished.
- Total wealth is fixed, and it can only be redistributed, never created.
This idea is the intellectual basis of mercantilism, Bullionism, and many forms of protectionist and anti-capitalist thought.
The critique from the Austrian School (and serious economics)
Ludwig von Mises, Friedrich Hayek, Frédéric Bastiat, and Murray Rothbard consider that this is one of the oldest and most damaging fallacies in the history of economic thought.
Why is it false?
Voluntary exchange is a positive-sum game
When two people exchange freely, both gain. Each gives up something he values less for something he values more (Subjective theory of value).
Simple examples:
-
You have an apple and I have a pencil. You prefer the pencil and I prefer the apple. After the barter, we are both better off. There was no loser.
-
When you buy a coffee for 3 dollars, Montaigne would say that you gained the coffee and the café lost the coffee (or vice versa with the money). The Austrians show that what lies behind it is an asymmetric valuation. You value the coffee more than the 3 dollars; the merchant values the 3 dollars more than the coffee. Both leave the exchange in a subjective position better than before they made it.
Wealth is created
Thanks to the division of labor, specialization, entrepreneurship, and capital, humanity generates more value than existed before. It is not a fixed pie.
The free market creates new wealth, continuously expanding the size of the social pie.
Historical consequences
This fallacy justified:
- Mercantilism and colonialism.
- Protectionist policies (“if I import, I destroy local employment”).
- Many modern critiques of capitalism (“the rich get rich at the expense of the poor”).
The Biological and Evolutionary Perspective: The bias of the primitive brain
Why, if Montaigne’s Theorem is economically false, does it strike us as so intuitive and seductive? Here is where the approach integrated with evolutionary biology sheds light on the behavior of our species:
During 99% of the evolutionary history of hominids (the Paleolithic), human beings lived in small nomadic tribes of hunter-gatherers. In that primitive ancestral environment, the economy really was zero-sum. If a tribe gathered the fruit of a tree or hunted a mammoth, those biological resources immediately became unavailable to the rival tribe. There was no private property, no intertemporal accumulation of capital, and no mass production.
Our brains evolved shaped by pressures of absolute natural scarcity and violent competition for fixed resources. Therefore, humanity carries an evolutionary zero-sum cognitive bias.
Montaigne’s Theorem is nothing more than the philosophical encoding of a primitive Paleolithic instinct that we find hard to switch off, preventing us from seeing intuitively the counterintuitive, sophisticated, and peaceful character of the spontaneous order of the modern market.
In short:
- Montaigne’s Dogma is the intuitive but erroneous belief that the economy is a fight to share a pie of fixed size.
- The Austrian School replies: the pie can be enlarged —and that is precisely the great contribution of free-market capitalism.
This fallacy is still very much alive today: it lies behind a large part of populism, economic nationalism, and certain currents of the left when they speak of “exploitation.”
This article is part of the Intermediate course on Libertarianism and the Austrian School of Economics -> Mercantilism
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Last updated: 2026-05-30
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