This is the first new scholarly edition this century of one of the greatest works in the history of philosophy: David Hume's Enquiry concerning Human Understanding. It is the third volume (the second to be published) of the Clarendon Hume Edition, which will be the definitive edition for the foreseeable future. In this work Hume gives an elegant and accessible presentation of strikingly original and challenging views. The distinguished Hume scholar Tom Beauchamp presents an authoritative text accompanied by introduction, annotation, glossary, biographical sketches, bibliographies, and indexes.