Full Professor in Modern Art History, Pietro C. Marani teaches Modern Art History and Museology in Politecnico di Milano. He is member of the Design PhD Team Professor, President of the Ente Raccolta Vinciana, founded in 1904 in Milan, and member of the Commissione Nazionale Vinciana, founded in 1903 in Rome. He has written more than two-hundred essays and books on Leonardo da Vinci, Francesco di Giorgio Martini, the Lombard artists of the Renaissance. He has published the Catalogue of the Drawings of Leonardo da Vinci and His Circle kept in French Public Museums (2008). He has collaborated to the two important exhibitions devoted to Leonardo Drawings and manuscripts held in the Metropolitan Museum in New York (2003) and in the Musée du Louvre in Paris (2003). He has organized and curated various exhibitions in many important cities worldwide, i.e. Leonardo da Vinci 1452-1519. The Design of the World (Milan, Palazzo Reale, 2015) at the occasion of the World Exposition.