Abstract for Crane’s talk

We often think about things that don’t exist, and we seem to make judgements about the sameness and difference of such non-existent objects (Hermes is the same mythical god as Mercury). But what does it mean to say that one non-existent object is the same as another? This question was posed by PT Geach many years ago under the label ‘intentional identity’. In this talk I argue that there is not really such a thing as intentional identity, but nonetheless it is true that non-existent intentional objects can be the same as, or different from, other non-existent objects.