Graduated in History of Art and History of the Classical Tradition from the Courtauld and Warburg Institutes of the University of London. From 1994 until 2006 he was responsible for the department of art history at the Forschungszentrum Europäische Aufklärung at Potsdam and was at the same time Lehrbeauftragter at the Institute of Art History of the Technische Universität in Berlin. From 2000 until 2002 he held Max-Planck-Research-Fellowship at the Bibliotheca Hertziana in Rome. In 2005 he was Research Associate at the Fondation Maison des Sciences de l’Homme in Paris and at Columbia University of New York. In his recent publications he has dealt with European art and architecture of the seventeenth and eighteenth centuries, the history of collecting in Germany and Russia, the impact of agents and correspondents of art and architecture, and the art theory of Denis Diderot and Friedrich Melchior Grimm.