James Higginbotham's work on tense, aspect, and indexicality discusses the principles governing demonstrative, temporal, and indexical expressions in natural language and presents new ideas in the semantics of sentence structure. The book brings together his key contributions to the fields, including his recent intervention in the debate on the roles of context and anaphora in reference. The book's chapters are presented in the form in which they were first published, with afterwords where needed to cover points where the author's thought has developed. It is fully indexed and has a collated bibliography. This will be a precious resource for all those involved in the study of current semantics, and its interactions with syntactic theory, in linguistics, philosophy, and related fields.