Ian Tyrrell is Scientia Professor of History at the University of New South Wales, Australia. His books include Transnational Nation and Historians in Public.

"Reforming the World, a dispassionate but deeply original work, puts American Protestant missionaries at the center of the struggle against the opium traffic."---David T. Courtwright, Journal of the History of Medicine and Allied Sciences --- "Tyrrell's work exemplifies the methods and complexity of transnational approaches to history. . . . [S]pecialists will find this book an important contribution to the historical study of imperialism and missions."---Lisa J. Pruitt, Journal of American History --- "One would be hard pressed to find an instance where Tyrrell's evidence does not speak to increased transnational, multidirectional flows of people and ideas. Moreover, Tyrrell rightly assesses Progressive Era evangelicals as complicated creatures whose ideas and actions were not informed by narrow or dogmatic notions of religion but rather reflected all manner of political and cultural circumstances and processes. Like any powerful work of world historical inquiry, Tyrrell's argument resonates with present global circumstances."---Clif Stratton, Journal of World History --- "This is a finely crafted study grounded in careful analysis of a wide range of manuscript and newspaper sources. It will help to bridge the gap that too often exists between historians of American foreign affairs and historians of American Protestant missions."---Brian Stanley, Journal of Church and State --- "Reforming the World is a highly readable, sophisticated analysis of transnational American reform networks that draws on a wide range of primary sources. The book makes a powerful argument about the contributions of interconnected evangelical reformers to the shaping of American empire."---Barbara Reeves-Elllington, H-Soz-u-Kult --- "This book will be of particular interest to transnational scholars, diplomatic historians, religious historians, and anyone curious about the origins of international humanitarianism. . . . [T]his study does a superb job demonstrating the manner in which moral reform influenced the United States as thoroughly as it did the foreign peoples American missionaries set out to save."---Amy S Greenberg, American Historical Review --- "In a study both thorough and perceptive, Tyrrell coves the global impact of reformist Protestant missionary efforts from the 1870s to the 1920s." --- "The book is well crafted, and the multiple threads laid out at the beginning are carefully and subtly woven into a tight and coherent narrative, allowing the reader to enjoy the thrill of recognition as well the blossoming awareness of the entangled nature of the moral reform movement in American imperialism. . . . Tyrrell has managed to create a book full of tensions and questions which the reader is drawn into, engages in, and emerges from with a broader understanding of, and critical insight into, this phase of American imperialism."---Diese Rezension, H-Soz-u-Kult