Abstract

I will suggest that we can begin to see why Edwards and Berkeley sound so much alike by considering how both think of minds or spiritual substances notas things modeled on material bodies but as the acts by which things are identified. Those acts cannot be described using the Aristotelian subject-predicatelogic on which the metaphysics of substance, properties, attributes, or modes is based because subjects, substances, etc. are themselves initially distinguishedthrough such acts. To think of mind as opposed to matter, or of acts of mind as opposed to mind itself, is already to assume the differentiation enacted by thoseacts. I argue that even though Edwards and Berkeley refer to distinctions such as mind vs. matter, they think that it is important to avoid treating mind, its acts, and its objects in terms of subject-predicate logic or substance metaphysics.