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Acknowledgments  This book came into being as a series of essays formulated to grapple with the problemoftheinteractionsbetweenConstantineandhissubjects.Ifirstembarked on the topic after delivering a lecture under the title “Constantine and the Cities” at the conference hosted by Guy Halsall at York University on the occasion of the 1,700th anniversary of Constantine’s accession to power in 2006. A revised version was later offered at Princeton at a conference organized by Helmut Reimitz and Jamie Kreiner in honor of Peter Brown. I thank the organizers of both events for providing me with both an impetus and a venue to explore this subject. Constantine and the Cities grew up alongside a series of other research projects with which it has had to vie for my attention. These include a book on late Roman slavery and another, directly related to this study, Constantine’s Capitals. The latter, nearly complete, should serve as a pendant to this study, examining as it does the abundant evidence for Rome and Constantinople as subjects to and influences on Constantine. All three projects benefited greatly from a series of fellowships I received in 2009 from the John Simon Guggenheim Foundation, the American Council of Learned Societies, and Dumbarton Oaks. I am deeply grateful to all three institutions for the support they have provided me. Without it I could never have completed this work, much of which has been sandwiched between two terms as department chair. I am also grateful to the University of Colorado, Boulder, for supporting a sabbatical, taken in conjunction with these fellowships, that freed me from teaching and service obligations long enough to write. Colorado’s Graduate Committee on the Arts and Humanities also provided me with funding to travel in central Italy and Rome collecting photographs and data for my research and its Arts and Sciences Fund for the Humanities offered funding to pay for photographs and permissions. My thoughts on Constantine have developed in communication with fellow scholars and students, all of whom have taught me much. Among the many researchers who discussed the topic with me and shared their own work, I should like to single out with particular gratitude the late Enzo Aiello, Giorgio Bonamente, Peter Brown, Andrew Cain, Giovanni Cecconi, Simon Corcoran, Sible De Blaauw, Hal Drake, Jan Willem Drijvers, Rita Lizzi Testa, Alessandro Maranesi, Ralph 404 Acknowledgments Mathisen, Dirk Rohmann, Irfan Shahid, Ignazio Tantillo, Martin Wallraff, Ed Watts, John Weisweiler, Johannes Wienand, Kevin Wilkinson, and Giuseppe Zecchini . Klaus-Martin Girardet has been especially generous with advice and materials , all of the highest quality. Equally important are my students present and past, whose own ideas and questions have presented me with both inspiration and insight. Special thanks in this group are due to Amy Coles, Aaron Johnson, Richard Payne, and above all Andrew Clay, whose valuable efforts as research assistant and editor played a major role in the completion of this book. Cristiana Sogno deserves special thanks for having painstakingly edited a version of the first section in her native language, at a point when I was considering publishing that material as an article. I thank Clifford Ando both for inviting me to submit to his Empire and After series and for offering a careful reading of my manuscript . So too I thank the readers for the University of Pennsylvania Press, Michael Kulikowski and David Potter, who indulgingly revealed their identities to me. Their comments and advice spared me several errors and helped me rethink the final structure of the monograph. Also worthy of thanks are my editors, Jerry Singerman, Noreen O’Connor-Abel, and Joyce Ippolito, whose patience with an overburdened author has been tempered with just the right amount of pressure. More than anyone I must thank my family. My wife, and colleague, Alison Orlebeke, provided me with the initial inspiration for this book and much advice on its composition. My children, Paul, Helen, and Chloe, have demonstrated exemplary patience with both me and Constantine over the past decade. Paul, a young man of great intelligence and potential, deserves special thanks for drawing all of the digital maps and some of the graphics for this book. I have learned much from all of them and been leavened by their love and support. ...