Philosophical Essays Concerning Human Understanding (An Enquiry Concerning Human Understanding)

No book clubs; the traps are Hume's own reissues and the title change. A second edition of the Philosophical Essays appeared in 1750, was reprinted in 1751, and appeared again in 1753 as vol. II of the four-volume Essays and Treatises on Several Subjects. The 1758 Essays and Treatises is the first appearance under the Enquiry title, and the posthumous 1777 text is the one most modern editions follow. Any copy bearing an edition statement, an 'Essays and Treatises' collective title-page, or the word 'Enquiry' is a later printing.