Definition
Classical economics is the body of thought, developed mainly from the late 18th to the mid-19th century by Adam Smith, David Ricardo, and John Stuart Mill, that established economics as a discipline. It holds that competitive markets, guided by self-interest and flexible prices, coordinate economic activity efficiently without central direction.
Its most famous image is Smith's invisible hand: individuals pursuing their own gain are led, as if by an unseen force, to outcomes that benefit society as a whole.
Why it matters
How it works
Classical reasoning starts from rational, self-interested individuals and competitive markets. Prices adjust freely until supply meets demand; if a market is out of balance, price movement restores it. Extended to the whole economy, this implies that downturns are temporary, since falling wages and prices will pull the economy back to full employment on their own.
That last claim drew sharp challenge during the Great Depression, when prolonged unemployment suggested markets do not always self-correct quickly. Keynesian economics arose in response. Yet the classical emphasis on incentives, competition, and the coordinating role of prices still anchors how economists think.