"La dottrina della causalità nell’universo di Gugliemo d’Alvernia: percorsi di lettura"

The aim of my work is to recall the attention on William of Auvergne’s natural philosophy, that plays an important role between the Platonism of the 12th and the Avicennian Aristotelism of the 13th century. In particularly I examine the causality doctrine in De universo creaturarum, the longer section of the Magisterium historiale et doctrinale, and I try to show the relationships with the other sections called De fide et legibus, De virtutibus et moribus, De vitiis et peccatis, De sacramentis. William of Auvergne infact not devotes to causality a specific part; he discusses this theory in more points of his monumental Magisterium. He starts upon an examination of the efficient causality of God (God as Fist Cause) and then he considers the natural causality of plants, animals and stones that receive powers by media or causae secundae. I riproduce at last in the appendix the titles list of 384 chapters of De universo.