Michele Bacci, Professor of Medieval Art History at the University of Fribourg, Switzerland, is the author of several publications on the cultural and art-historical contacts of East and West in the Middle Ages and on the history of the religious practices associated with cult-objects and holy sites. His books include Il pennello dell’Evangelista (1998), Pro remedio animae (2000), Lo spazio dell’anima (2005), San Nicola il Grande Taumaturgo (2009) and The Many Faces of Christ (2014). He is editor-in-chief of the periodical Iconographica.