  An indexical is, roughly speaking, a linguistic expression whose reference can shift from context to context. For example, the indexical ‘you’ may refer to one person in one context and to another person in another context. Other paradigmatic examples of indexicals are ‘I’, ‘here’, ‘today’, ‘yesterday’, ‘he’, ‘she’, and ‘that’. Two speakers who utter a single sentence that contains an indexical may say different things. For instance, when both John and Mary utter ‘I am hungry’, Mary says that she is hungry, whereas John says that he is hungry. Many philosophers hold that indexicals have two sorts of meaning. The first sort of meaning is often called ‘linguistic meaning’ or ‘character’ (the latter term is due to David Kaplan, 1989a). The second sort of meaning is often called ‘content’. Using this terminology, we can say that every indexical has a single unvarying character, but may vary in content from context to context.