'This wide ranging and learned work will establish Nicholas Rengger as one of the most impressive writers on international relations today.' - Steven B. Smith, Alfred Cowles Professor of Political Science, Yale University, USA'In open and engaging prose, Rengger offers a thorough-going study of some of the most important books that have shaped the debate on political theory and international relations. It displays a formidable intellectual grasp and the kind of moral conviction rarely found in today's academic discourse. It is a striking and sometimes dazzling commentary on what the author calls 'modern anti-Pelagianism', a lens through he looks at how writers as diverse as John Gray and Jean Bethke Elshtein have interrogated the troubles and discontents of our day.' - Christopher Coker, Professor, London School of Economics, UK'International theory has needed regular jolts of history and philosophy to sustain its vitality: by proposing a new typology of "anti-Pelagian" thought, Nicholas Rengger has given the field another welcome shot in the arm. His wide-ranging collection of essays has something for almost everyone; they will not all agree with the argument, but he does provide substantial material for productive debate.' - David Armitage, Harvard University, USA