John Locke discusses the notions of identity and diversity in Book 2, Chapter 27 of An Essay Concerning Human Understanding. At the beginning of this much-discussed chapter, Locke posits the place-time-kind principle. According to this principle, no two things of the same kind can be in the same place at the same time . Just what Locke means by this is unclear, however. So too is whether this principle causes problems for Locke, and whether these problems can be resolved. This (...) is significant because the place-time-kind principle is foundational to Locke's discussion of identity. Moreover, the place-time-kind principle stands at the center of a number of lively and long-standing debates in Locke scholarship. These include the debates over the ontological status of Lockean persons, and whether Locke is a relative identity theorist, to name just two. In this paper, I offer a survey of how Locke's place-time-kind principle has been interpreted in the secondary literature. The aim of this taxonomy is to clarify where the differences between competing interpretations lie, and additionally show just how challenging it is to determine which reading is best. (shrink)

Leibniz holds that we cannot give an account of the synchronic and diachronic identity of a person without appealing to a substance. This paper analyses his reasons for this anti-Lockean thesis. It first looks at his theory of substance, paying particular attention to his commitment to the Principle of Sufficient Reason: the existence of a well-ordered series of mental states cannot be sufficiently explained without reference to a substance. The paper then examines the distinction Leibniz draws between the substance as (...) the “real person” and the “appearing person” that comes into existence through reflexive consciousness. It argues that there can be no appearing person without a real person and looks at the relationship between these two types of person. Leibniz’s distinction is still relevant because it shows that questions concerning the metaphysical constitution of a person need to be carefully distinguished from questions concerning the psychological construction of a personality. (shrink)

Many think John Locke's account of personal identity is inconsistent and circular. It's neither of these things. The root causes of the misreading are [i] the mistake of thinking that Locke uses 'consciousness' to mean memory, [ii] failure to appreciate the importance of the ‘concernment’ that always accompanies ‘consciousness’, on Locke's view, [iii] a tendency to take the term 'person', in Locke's text, as if it were only some kind of fundamental sortal term like ‘human being’ or ‘thinking thing’, and (...) to fail to take proper account of Locke's use of it as a forensic term. It's well known that Locke uses 'person' as a forensic term, but the consequences of this have still not been fully worked out. (shrink)

Quelles sont les opinions spéculatives de John Locke sur la nature de l’esprit et des idées et sur les conditions métaphysiques de la pensée et de la conscience? Faut-il en rester à la vision traditionnelle d’un Locke qui reste agnostique à propos de telles questions, au prétexte que leur traitement excède la méthode adoptée dans l’ Essai? Philippe Hamou a affronté ce problème et a entrepris de réévaluer la philosophie de l’esprit lockienne, dans une série de travaux qui illustrent l’intérêt (...) contemporain pour la métaphysique qui convient à cette épistémologie. La présente discussion situe la contribution de P. Hamou au sein des études récentes et propose quelques objections. (shrink)