Adam Smith was a Scottish philosopher and economist whose ideas helped launch modern economics. His 1776 book The Wealth of Nations explained how markets, trade, labor, and prices could be studied as connected systems. Smith argued that people often create broad social benefits while pursuing their own interests within fair rules.
His work matters because it shaped the study of capitalism, competition, specialization, and economic growth.
Key Facts
- Adam Smith lived from 1723 to 1790 and is often called the father of modern economics.
- The Wealth of Nations was published in 1776 and became a foundation of classical economics.
- The invisible hand describes how self-interested choices can guide resources toward useful outcomes in competitive markets.
- Division of labor increases output by allowing workers to specialize in specific tasks.
- Total revenue = price x quantity sold, or TR = P x Q.
- Profit = total revenue - total cost, or Profit = TR - TC.
Vocabulary
- Invisible hand
- The invisible hand is Smith's idea that individual choices in markets can unintentionally produce benefits for society.
- Division of labor
- Division of labor means splitting production into specialized tasks so workers can become faster and more skilled.
- Free market
- A free market is an economic system where prices and production are mainly guided by supply, demand, and voluntary exchange.
- Classical economics
- Classical economics is an early school of economic thought focused on markets, production, trade, growth, and the role of competition.
- Moral sentiments
- Moral sentiments are the feelings of sympathy, fairness, and approval that Smith believed help guide human behavior.
Common Mistakes to Avoid
- Thinking Smith believed greed always helps society is wrong because he emphasized competition, moral judgment, and fair rules as limits on self-interest.
- Treating the invisible hand as magic is wrong because it depends on real conditions such as competition, information, property rights, and voluntary exchange.
- Assuming Smith opposed all government action is wrong because he supported roles for government such as justice, defense, public works, and education.
- Forgetting The Theory of Moral Sentiments is wrong because Smith's economics was connected to his broader view of human sympathy and ethical behavior.
Practice Questions
- 1 A workshop makes 40 pins per day with each worker doing every task. After division of labor, it makes 240 pins per day with the same workers. By what factor did output increase?
- 2 A bookseller sells 75 copies of The Wealth of Nations at 900, what are total revenue and profit?
- 3 Explain how division of labor and the invisible hand could both operate in a competitive market, and describe one condition that must be present for the outcome to benefit society.