A bronze statue on Edinburgh's Royal Mile comes to life and begins to walk. As Adam Smith strides through 18th-century Scotland—the harbor of Kirkcaldy, the markets of Glasgow, the shadowed back lanes of Oxford—every scene his eyes rest upon becomes a question that will one day become The Wealth of Nations. Absent-minded? No. He was the sharpest observer of his age.

What is the wealth of a nation? Smith finds the answer not in gold and silver, but in labour. The first great insight of The Wealth of Nations: the division of labour. Watch eighteen workers in a pin factory produce 48,000 pins in a single day—a feat impossible for any individual alone. The real source of national prosperity begins here.

Dogs never exchange bones. But humans have traded since the beginning of time—and Smith finds in this simple fact the foundation of all civilization. Labour is the real price of every commodity, the original currency. Money made exchange convenient, but true wealth is not the coin itself—it is the labour the coin can command. The birth of homo economicus.

The invisible hand appears just once in all of The Wealth of Nations. But what we encounter every day is the price tag. Behind every price, three interests are woven together: the landlord's rent, the labourer's wages, the stockholder's profit. Between natural price and market price lies a kind of gravity. Smith explains how individual self-interest quietly produces social order.

Where does wealth come from—and where does it go? These two questions drive the whole of Book One of The Wealth of Nations. What causes the improvement of labour's productivity? And how is the produce distributed across society? What determines wages, profits, rent? Smith lays open the anatomy of 18th-century British economic life.

Ten thousand pounds locked in a chest—am I wealthy? No. I may be growing poorer by the day. Money is the great wheel of circulation, not wealth itself. The distinction between fixed and circulating capital, productive and unproductive labour, and the principle by which parsimony builds capital. Smith reads the logic of national prosperity in the management of private stock.

Is the fastest road always the right road? London's port was the centre of the world, yet England's tenant farmers remained poor. The natural order of development runs: agriculture, manufactures, foreign commerce. England inverted this sequence. Primogeniture, entail—the laws that chained land distorted the natural course of opulence. Smith dissects history.

The invisible hand as we know it today is largely a myth made by Paul Samuelson's 1948 textbook. What Smith actually fought was mercantilism—the doctrine that a favourable balance of trade was national wealth, that the state must control everything. Why free trade benefits all, why protective tariffs are harmful. Smith explains what the invisible hand actually meant.

Export a live sheep—first offence: forfeit everything, one year in prison, left hand severed and nailed in the public market. Second offence: death. This was the law of England in Smith's own lifetime, to protect the woollen trade. How monopoly exploits the consumer. Who truly benefited from colonial trade. Smith confronts the economic fiction of empire head-on.

Smith spent his final twelve years as Commissioner of Customs for Scotland. He never argued for a merely small government—he made a precise distinction between what governments must do and what they must not. Defence, justice, public works, education: the things markets cannot do alone. And four maxims of taxation. In this final lecture, Smith defines the proper role of the state.