This paper investigates Kant’s account of “real essence” and of a thing’s “nature”. Notwithstanding their wide negligence in the literature, these concepts belong to the central ones of Kant’s metaphysics. I argue that, on the one hand, Kant is in continuity with the Aristotelian-Scholastic tradition of essence. But, on the other hand, he also follows Locke in distinguishing between “logical” and “real” essence. Contrary to recent attempts of aligning real essence with contemporary approaches to essence, I will defend the thesis (...) that Kant equates real essence and (formal) nature, and that real essence has a causal, but no constitutive role. I shall also respond to potential objections and discuss some developments of Kant’s views. (shrink)

As is well known, the linguistic/philosophical reflection on natural kind terms has undergone a remarkable development in the early seventies with Putnam and Kripke’s essentialist approaches, touching upon different aspects of Kan’s slant. Preliminarily, however, it might be useful to review some of the theoretical stages in Locke and Leibniz’s approaches on natural kind terms in the light of contemporary reflections, to eventually pinpoint Kant’s contribution and see how some commentators have placed it within the theory of direct reference. Starting (...) with textual evidence even from the logical corpus, in the present essay I will attempt to discuss some of the arguments dismissing Kant’s adherence to this view. These assume that in his approach to the semantics of natural kind Kant appears to be still holding on to a nominalist/conceptualist position, though he seems to be well aware of a few key issues for the theorists of direct reference. (shrink)