Marsilius of Inghen, master of the Universities of Paris (1362-1378) and Heidelberg (1386-1396), is the author of a number of highly successful treatises on logic and natural philosophy which were read at many Late Medieval and Early Modern universities. The fruit of his mature thinking is a monumental commentary on the Sentences of Peter Lombard, which he published shortly before his death in 1396. This huge piece of writing is now being critically edited for the first time by an international team of specialists. The first volume provides a discussion of the nature of theology and deals...