Our outstanding ability to communicate is a distinguishing features of our species. To communicate is to convey meaning, but what is meaning? How do words combine to give us the meanings of sentences? And what makes a statement ambiguous or nonsensical? These questions and many others are addressed in Paul Elbourne's fascinating guide. He opens by asking what kinds of things the meanings of words and sentences could be: are they, for example, abstract objects or psychological entities? He then looks at how we understand a sequence of words we have never heard before; he considers to what...