Zweder von Martels, Ph.D. (1989) teaches Neolatin at the University of Groningen. He has written on humanist travel, renaissance alchemy and Neolatin literature and culture. He is the editor of Augerius Gislenius Busbequius. Legationis Turcicae epistolae quatuor (1994) and has published two collections of essays: Alchemy Revisited (1990) and (with Victor Schmidt) Antiquity Renewed (2003)Arjo Vanderjagt, Ph.D. (1981) is Professor of the History of Ideas and of Medieval Studies at the University of Groningen. He has published on the anthropology of the Church Fathers, the thought of Anselm of Canterbury, the political ideology of the fifteenth-century dukes of Burgundy, and on Northern Humanism. He is co-editor of Rodolphus Agricola Phrisius (1988), Wessel Gansfort and Northern Humanism (1993), Northern Humanism in European Context, 1469-1625 (1999), and of Princes and Princely Culture (2003).