The Theory of Moral Sentiments

Smith's foundational claim is that moral judgment begins in feeling, not calculation: we approve or disapprove of others' conduct based on whether we can imaginatively share their emotions and find our own resulting feelings in harmony with theirs. This capacity for sympathy — projecting ourselves into another's situation to feel something like what they feel — is, for Smith, the actual mechanism underlying praise, blame, guilt, and approval, prior to any formal moral rule. To correct for the obvious problem that our sympathy is always partial and self-interested, Smith proposes the idea of an 'impartial spectator,' an imagined, disinterested observer we construct within ourselves whose hypothetical judgment we learn to consult, gradually training our instinctive self-favoritism into something closer to genuine fairness.

This matters because it offers an alternative to both purely rationalist ethics (morality derived from abstract principles) and purely self-interested accounts of human nature, showing how social creatures can develop real moral standards through everyday emotional feedback with others, long before any philosopher writes down a rule. It's also essential background for understanding Smith's later, far more famous Wealth of Nations, since the self-interest he describes there operates inside a person already shaped by sympathy and social judgment, not a purely selfish calculator.

Who should read it

This suits readers interested in the psychological roots of moral judgment and those who assume Smith was only an economist of self-interest, since this earlier work reveals a much richer, more relational view of human motivation. It's demanding eighteenth-century prose, so readers new to older philosophical writing should expect to slow down.

About the author

Adam Smith was an eighteenth-century Scottish philosopher and economist, a central figure of the Scottish Enlightenment, later famous for An Inquiry into the Nature and Causes of the Wealth of Nations.