'This is a work of genuine importance, excellently constructed and rigorously thought out, combining accessibility with great originality. It is a wise, mature, thought-provoking book. This book injects new life into the study of late medieval politics; it offers a highly stimulating and easily accessible overview of political conduct in the late Middle Ages; it is rich in new ideas and will be a fundamental point of reference for future discussion of the politics of the period.' David Abulafia, University of Cambridge