David Hume (1711–1776), the Scottish philosopher, historian, and essayist, entered the University of Edinburgh at about twelve and drafted much of the Treatise of Human Nature in his twenties at La Flèche — the same French town where Descartes had gone to school. His philosophical works, above all the Treatise and the two Enquiries, push British empiricism’s premises to their limits, reaching conclusions that disturbed both religious and philosophical orthodoxy.
Major Works
- A Treatise of Human Nature (1739–40) — the comprehensive philosophical system; Book I on impressions and ideas, personal identity, and the limits of reason
- An Enquiry Concerning Human Understanding (1748) — the more accessible presentation of his epistemology
- An Enquiry Concerning the Principles of Morals (1751)
- Dialogues Concerning Natural Religion (published posthumously 1779)
- The History of England (1754–62) — widely read in his lifetime; established his literary reputation
Key Positions
Impressions and ideas. Hume’s fundamental division of mental contents: impressions are vivid, forceful — the deliverances of the senses, passions, and emotions; ideas are their fainter copies in thought and memory. Every simple idea is a copy of a corresponding impression; complex ideas are composed of simple ones. This is the copy theory of ideas: thought and imagination are, at bottom, reruns of prior sense experience. The mind’s furniture is impressions and ideas arranged and reassembled, with no rational intuitions or a priori insight beyond these materials.
The bundle theory of the self. In the Treatise (I.4.6), Hume reports the famous failure of introspection: whenever he enters most intimately into what he calls himself, he stumbles on some particular perception (heat or cold, light or shade, love or hatred) and never catches himself without a perception. He never observes anything but the perceptions themselves. He concludes that the self is “nothing but a bundle or collection of different perceptions” united by relations of resemblance and causation, with no underlying substrate or additional inner owner.
The unsolved unity problem. Hume himself conceded, in the Appendix to the Treatise, that his account of personal identity was unsatisfactory. He could explain how perceptions are connected by resemblance and causation, but could not explain what unites them into one mind, one continuous life — without positing exactly the ego his empiricism could not allow. He left the problem unsolved.
The limits of reason: causation and induction. Hume argued that we perceive only constant conjunction between cause and effect, never necessary connection, and that inductive reasoning cannot be rationally justified — it rests on habit and custom, not reason. These conclusions follow from applying the empiricist starting point rigorously; they pushed the tradition toward either skepticism or a search for different premises.
My View
Hume plays two roles in the book, and they pull in opposite directions. As an empiricist theorist of perception he deepens the inner theater Locke furnished: experience becomes a parade of impressions and their fainter copies, with the mind a kind of stage across which they pass. But as the philosopher who went looking for the self and found no one home, Hume hands the book one of its sharpest anti-reification weapons. I resist the first Hume and recruit the second.
Against the impressions-and-ideas framework: the copy theory of ideas reifies representational activity into inner pictures viewed by an inner eye. Memory is world-directed, not an album of fading impressions. Hume’s picture is the empiricist inner theater at its most explicit.
From the bundle theory I take the anti-reification lesson: introspection turns up no additional inner owner behind experience. But a mere collection of perceptions does not yet identify their subject. The book’s provisional answer is organizational: the minimal subject is the relatively maximal persisting control organization within which attention, memory, correction, expectation, planning, and action participate in one recurrent economy. Practical stake may add interests and welfare. Public language and inner speech arrive later, assembling the narrating personal self and its auditable ledger. Hume removes the tenant; Chapter 17 distinguishes the integrated subject from the socially assembled narrator.
Related Concepts
- Anti-Reification — the bundle theory as a model refusal to hypostatize the self into an inner thing
- The Inner Theater — impressions and ideas as the empiricist furnishing of the Cartesian stage
- Indirect Realism and Sense-Data — the copy theory of ideas as a representative theory of memory and imagination
- Physicalism — the relational/embodied binder the book supplies where Hume left the bundle unbound
- Semantic Externalism — the social constitution of the self that answers Hume’s unsolved unity problem