This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.
Libertarianism is easy to mistake for classical liberalism restated, and the mistake is understandable, since the two traditions share a root commitment to individual liberty that runs back to the same seventeenth and eighteenth century sources. John Locke argued that individuals hold natural rights to life, liberty and property that exist prior to government, and that government exists only to protect them; Adam Smith argued that free exchange, left alone, tends toward mutual benefit rather than zero sum extraction. Libertarianism inherits both claims directly. What it adds is not a new foundation but a sharper edge: where mainstream liberalism accepts a state that regulates markets, redistributes income and provides public services alongside protecting rights, libertarianism holds that the legitimate purpose of the state is limited to protecting individual rights to life, liberty and property, typically through courts, police and national defense alone, and treats most further state action as itself a rights violation rather than a policy tradeoff to be debated.
As a distinct modern political label and movement, rather than simply a strand within classical liberalism, libertarianism crystallized in the United States in the middle of the twentieth century, and it developed internal variants that disagree sharply with each other about how far the logic should be pushed. Robert Nozick argued for a minimal, night-watchman state whose narrow functions are themselves the limit of legitimate authority, a position often called minarchism. Murray Rothbard argued the logic further still, toward anarcho-capitalism, in which even those narrow functions should be provided through voluntary exchange rather than a state holding a monopoly on force. Both positions treat property as close to absolute and treat the individual as the sole owner of themselves, but they disagree about whether any state at all can be justified on libertarian premises.
Placed next to its neighbors on the same set of questions, the pattern is clear. Libertarianism shares communism's interest in the relationship between property and power, but answers it in the opposite direction: where communism holds that private ownership of the means of production is the source of exploitation and calls for its abolition, libertarianism holds that private property and voluntary exchange are the foundation of individual liberty and calls for their protection. It shares liberalism's starting premises but presses the argument against state power further than mainstream liberalism does. A frequent criticism, including from communitarian and social democratic critics, is that libertarianism's picture of the self-owning individual understates how much a person actually depends on shared institutions, from courts and currency to education, to exercise the very liberty libertarianism prizes.