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📘 A Treatise of Human Nature

Follow Hume from impressions and custom to passion, morality, and the limits of philosophical certainty.

4
lessons
~20 min
to learn
Adults
level
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What you’ll learn

  1. Starting with ExperienceDistinguish impressions, ideas, association, and Hume’s bundle view of the self.Hume’s science of human nature starts with experience and follows its materials into the imagination.
  2. From Ideas to Causal ExpectationExplain how custom turns repeated experience into causal expectation and belief.Hume finds the felt necessity of causation in the mind’s customary transition, not in a visible extra ingredient between events.
  3. Passions, Sympathy, and ResponsibilityExplain Hume’s account of passion, sympathy, and compatibilist responsibility.Human action is moved by feeling, shaped by imagination, and intelligible through regular motives and circumstances.
  4. Moral Life and the Open QuestionConnect sentiment, convention, justice, skepticism, and the Treatise’s publication history.Hume treats moral life as practical and social while keeping philosophical certainty on a short leash.

Questions this course answers

What is Hume’s copy principle?

Hume says that simple ideas in their first appearance are faint copies of simple impressions.

Where does Hume locate the necessity in causation?

Repeated conjunction produces an expectation, and the felt determination of thought is the source of the idea of necessity.

Why can’t reason alone motivate action?

Reason can correct beliefs and calculate means, but desire or aversion must make an outcome matter.

What does Hume mean by sympathy?

We infer another’s condition from signs and relations, then an idea gains force enough to affect our own passions.

Why does Hume call justice artificial?

The virtue depends on stable social rules whose usefulness emerges from human circumstances.

What kind of skepticism does the Treatise finally present?

Hume’s philosophical doubts do not abolish life; they show how much life depends on principles reason cannot demonstrate.

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