Abstract

There are two parts to Lewis's account of the de se. First there is the idea that the objects of de se thought (and, by extension of de dicto thought too) are properties, not propositions. This is the idea that is center-stage in Lewis's discussion. Second there is the idea that the relation that thinkers bear to these properties is that of self-ascription. It is crucial to LewisÕs account that this is understood as a fundamental, unanalyzable, notion: self-ascription of a property is not ascription of a property to the self, on a par with ascription to someone else. This has been overlooked in much recent discussion, especially when Lewis's account is understood in terms of centered worlds. When it is back in focus it brings problems. An almost Cartesian starting point is required; and first-person plural ascriptions, and those with first person pronouns other than in subject position, become unmanageably complex.