Criticism of Locke's account of personal identity has proceeded cumulatively. Three years after the publication of the chapter “Of Identity and Diversity”, John Sergeant raised an objection which, in Bishop Butler's hands, was to become famous as the dictum that “one should really think it self-evident that consciousness of personal identity presupposes, and therefore cannot constitute, personal identity: any more than knowledge, in any other case, can constitute truth, which it presupposes”. Berkeley added, in effect, that when consciousness is taken (...) to be the criterion of personal identity, one must admit that a man conscious of segments of his life at some times and not at others both is — because “conscious of” states a transitive relation — and is not — because of lack of consciousness—the same person. (shrink)

The article is an examination of locke's theory of personal identity in terms of his underlying commitment to a substance/property metaphysics. it is argued that the resources for his solution must be drawn from his theory of properties (modes), which are fully instantiated properties (or 'aspects'). locke raises the important problem of the identity of modes through time. his solution is outlined and criticized. the failure of his theory is diagnosed in terms of the intractability of the problem given his (...) underlying metaphysics. (shrink)