Abstract: The central claim of this book is that I is a deictic term, like the other singular personal pronouns You and He/She. This is true of the logical character, inferential role, referential function, expressive use, and communicative role of all and only expressions used to formulate first-personal reference in any language. The first part of the book shows why the standard account of I as a ‘pure indexical’ (‘purism’) should be rejected. Purism requires three mutually supportive doctrines which turn out to be myths: a) that a simple rule is sufficient to give the meaning of I (‘rule theory’); b) that one can use I to express thoughts without having to identify what is being referred to (‘independence’); and c) that as a matter of the meaning of I, any use of the term is logically guaranteed against failure to refer (‘the guarantee’). The second part of the book shows why the radically new account of I should be endorsed as a deictic term. Substitution instances and the behaviour of I in inference reveal that it has an obligatorily deictic logical character and inferential role. I fulfils its referential function in the deictic way, providing determinacy of reference by making an individual referentially salient in the extra-sentential context. The discriminability of the referent of an I-use depends on recognizing the referentially salient individual. This is true of its discriminability both to the reference-maker and to the audience. So I has the expressive use and communicative role of a deictic term. The conclusion of the book directs research towards the next step, showing how the meaning of I may be used to elucidate the thoughts expressed by the term, and from there questions relating to self-knowledge, practical reasoning, belief-acquisition, and belief-ascription.

Keywords: first person, deictic term, reference, logical character, inferential role, expression, communication, determinacy, discriminability, guarantee