Felix Heinzer retired as Professor of Medieval Latin at the University of Freiburg in 2015. Currently Senior Professor at the Centre for the Study of Manuscript Cultures, Hamburg, he has also been a visiting scholar at the Centre for Medieval Studies and the Pontifical Institute of Mediaeval Studies, Toronto, the University of California, Berkeley, and the Stanford Humanities Center. Formerly curator of manuscripts at Stuttgart, Wurttembergische Landesbibliothek (1988-2005), his scholarly interests center on monastic libraries and their holdings, especially in the area around Lake Constance and the Upper Rhine, and on the liturgy and sacred poetry of the Latin Middle Ages. Extensive work in these fields includes Klosterreform und mittelalterliche Buchkultur im deutschen Sudwesten (2008), Hermann der Lahme: Reichenauer Monch und Universalgelehrter des 11. Jahrhunderts, co-edited with Thomas Zotz (2016), and Medial Ambiguity: Liturgical Books of the Latin Church and Their Changing Status in Mediaeval Tradition, Manuscript Cultures 10 (2017).