 Locke’s most thorough discussion of the persistence (or diachronic identity) of persons can be found in Book 2, Chapter 27 of the Essay (“Of Identity and Diversity”), though Locke anticipates this discussion as early as Book 1, Chapter 4, Section 5, and Locke refers to persons in other texts, including the Second Treatise of Government. The discussion of persons and their persistence conditions also features prominently in Locke’s lengthy exchange with Edward Stillingfleet, Bishop of Worcester (1697–1699).