Abstract

In Dimensions of Private Law, Professor Stephen Waddams describes the obstacles that an adequate classification of private law must overcome. The purpose of this essay is to offer a theoretical account of legal classification that explains how these obstacles can be overcome and what the resulting classification of private law might look like. I begin with the catalogue of obstacles that Waddams presents and argue that, because they are rooted in misconceptions about the classificatory project, they pose no threat to an adequate conception of legal classification. In search of such a conception, I consider how three great legal theorists – Aristotle, Kant, and Hegel – answer three fundamental classificatory questions about private law. First, what is the unitythat underlies the seemingly chaotic array of legal instances? Second, what is the principle of differentiationthat applies to this unity? Third, how are legalinstancessubsumed under this differentiated unity? The focus of this essay is the enduring significance of Kant’s conception of legal classification, which provides an alternative to Waddams’ conception and offers a set of coherent answers to the fundamental classificatory questions. In contrast, both Aristotle and Hegel respond to the fundamental classificatory questions by providing a conception of the unity of private law that fails to cohere with their ensuing accounts of its differentiation