Abstract
Studying Giles of Rome’s De ecclesiastica potestate, scholars usually focus their attention on the first part, where the Augustinian master argues in favor of his extreme theory of papal power. The present paper deals with the second part of the treatise, devoted to the relationship between the Church and temporal possessions. The main issues discussed in this part are therefore not political and ecclesiastical power, but ownership and poverty. The paper underlines in the first place the connection existing between Giles of Rome’s treatment of these problems and the controversy between Secular and Mendicant clergy. Although originally a mendicant friar himself, Giles tries to avoid any interpretation of mendicant proverty that could undermine the right of the Church to exercise lordship over temporal goods. In the second place, the paper shoes how Giles’ account of the origin of private poverty is functional to his claim that the Church possesses all rights on temporal goods at the highest level. In this way, the Church is the sole authority that can grant a right of property, so that every human being depends on the Church also for his legitimate possession of temporal goods.