Abstract

Post-Quinean Nominalism is widely regarded as a metaphysics of concreteness, suggesting (in line with scientific naturalism) that ordinary language and common sense might be in the grip of “ordinary hallucinations” (Varzi 2010), or untutored belief in abstract entities. Drawing on both medieval and contemporary sources, this paper argues that, far from encouraging our minds to stick to concreteness and individuals, an untutored usage of Ockham’s Razor prompts the elision of concreteness and the everyday world from contemporary metaphysics. A theory of individuality based on Husserl’s concept of Unitary Foundation is outlined, and partially traced back to the metaphysicians of essential individuality, or haecceity: Boethius, Scotus, Leibniz – the champions of the “Unitarian Tradition.”