I would like to thank my father, James, and my wife, Catherine. I am indebted to Charles Forsdick and Anthony Cond of Liverpool University Press for their generosity in being interested in this topic and for their calm and courteous help. For their kind encouragement I am grateful to Ian and Janet Morrison, and Catherine Hare. I am grateful to the Bibliothèque nationale de France at Tolbiac, Paris for its varied resources and services.
I am especially thankful to my friend, former teacher and former colleague Geoff Hare, without whose wise advice and unflinchingly generous support of all kinds over many years so many things would have been so much more difficult.