The research behind this book began at Yale, and among the many things for which I owe a debt of gratitude to Kathryn Tanner and George Lindbeck, one is the encouragement and advice they gave on this project. David Ford, Nicholas Lash, Fergus Kerr, and Denys Turner have also, at different stages and in different ways, provided much appreciated support.
I am grateful to the members of Professor Peter Walter's Dogmatics Seminar at the University of Freiburg, whose response to an earlier version of some of the material in chapters 4 and 5 was instructive. I am particularly grateful to Philip Endean SJ for the kindness of offering me detailed disagreement with this same material.
The completion of this book has been made possible by the generosity of the University of Nottingham in providing an early sabbatical, and by the Research Leave Scheme of the Arts and Humanities Research Board.
My parents, to whom the book is dedicated, have provided the kind of support at many levels and over many years which is the condition of the possibility of the writing of a book: I am grateful to them, and also to John, Sally, Robert, and Andrew Hunton, without whom it would have been finished much earlier.