The idea of a dialogue - sometimes harmonious, sometimes divisive - between the centre and periphery of the early modern European state stands at the heart of much of John Elliott's historical writing. It is the fulcrum around which his Imperial Spain revolves, and it lies at the heart of his analysis of the causes of the revolt of the Catalans against the centralising policies of the Madrid government. His writings on the Americas, such as The Old World and the New, likewise stressed the relationship between centre and periphery. This collection of essays by a group of Elliott's former students examines different aspects of this important theme and develops them. Taken together with the 'personal appreciation' of Elliott (Regius Professor of Modern History at Oxford), it forms an important examination of the work of the greatest living historian of Spain as well as a major contribution to early modern European history.