I favour an analysis of selfhood which ties it to the possession of certain kinds of first-person knowledge, in particular de re knowledge of the identity of one's own conscious thoughts and experiences. My defence of this analysis will lead me to explore the nature of demonstrative reference to one's own conscious thoughts and experiences. Such reference is typically ‘direct’, in contrast to demonstrative reference to all physical objects, apart from those that are parts of one's own body in which (...) one can localize sensations or which are directly subject to one's will. My conclusion will be that the semantic distinction between ‘direct’ and ‘indirect’ demonstrative reference helps to delineate the metaphysical boundary between oneself and the rest of the world. But I do not contend that one is to be identified with one's own body: indeed, I shall try to show that one can know a priori that no such identity can obtain. (shrink)