When I remarked to colleagues that I was editing a book, the most common reaction was a dry laugh and an assurance that this was a thankless task. This has made me greatly appreciate the contributors to this book. They have responded to my various queries and comments with great thoughtfulness, incisiveness, courtesy (however they actually felt!) and promptness. It has been a pleasure to work with them. I would also like to thank Hywel Evans, then at RoutledgeFalmer, for his support of this project. And finally, thanks go, as ever, to Ian, Madi and Daniel, my family.