Abstract

This paper is dedicated to William of Ockham’s theory of habit, which he considers to be a disposition of a power of the soul. I will argue that Ockham’s view on the relation between a habit and its manifestation sheds new light on his well-known thesis that sensible and intelligible species are not needed to account for cognition. The identity conditions of habits are themselves the ground of their intentionality: there is no way to track a habit from an act of a given kind except by stipulating a causal relation between them. In this sense, a study of Ockham’s theory of habit is a step towards our understanding of the relation between similarity and causation in his theory of intentionality. Ockham’s theory of habit accommodates intentional phenomena that, contrary to the scholarly consensus, are not ipso facto semantic phenomena.