Adam Smith’s 1776 book The Wealth of Nations uses the phrase “invisible hand” to describe a self-regulating market force.
Smith argued that people pursuing their own interests can sometimes unintentionally promote broader social benefits, especially when competition and exchange guide resources toward valued uses. The phrase appears only a few times in Smith’s writings, but it became one of the best-known ideas associated with classical economics.
The invisible hand is not a claim that every market outcome is efficient or fair. Market failures can arise from pollution, monopoly power, missing information, or public goods. Governments may therefore use taxes, regulation, competition policy, or public spending to address such problems.
A common mix-up is treating the phrase as a literal economic mechanism or as proof that markets always work perfectly. It is better understood as a metaphor for decentralized coordination through prices, incentives, and voluntary exchange.