My acknowledgements to kind friends are many. I am grateful for the year-in and year-out patience and willingness of the officials of the Bibliothèque Nationale during long periods of constant demand upon their time and attention. Professors John De Witt, D.D., LL.D., of Princeton Theological Seminary, Duncan B. Macdonald, Ph.D., of Hartford Theological Seminary, and Edward P. Cheyney, Ph.D., LL.D., of the University of Pennsylvania, have read portions of the manuscript, and have made important and helpful suggestions. The whole manuscript has been read by Professors Talcott Williams, LL.D., of Columbia University, and R. M. McElroy, Ph.D., of Princeton University, who have not hesitated to give many hours to discussion and criticism of the theory that the book presents.
Above all, I am indebted for practical aid and encouragement in research and in writing, from the inception of the idea of the book until the manuscript went to press, to my wife, with her Bryn Mawr insistence upon accuracy of detail and care for form of narrative, and to Alexander Souter, D.Litt., Regius Professor of Humanity in Aberdeen University, my two comrades in research through a succession of happy years in the rue de Richelieu, rue Servandoni, and rue du Montparnasse of the queen city of the world.
H. A. G.