A book’s title should indicate its subject and, even better, its approach to its subject. Basic dictionaries define a companion as one who ‘accompanies another’, is an ‘associate in’, or a ‘sharer of’. A secondary definition is a ‘handbook or reference book’; a thing that ‘matches another’. I anticipate that a book called a ‘Companion’ will be company, will allow me to associate, to share, refer, and be matched as though with a real-life companion; a partner. Given that the book is published by a major university press, it is expected that the companion may be more of a mentor than a guide, but still present information in a lively, accessible style.