Works

A complete list of works by Kilwardby includes texts on logic, grammar, theology, and natural philosophy. Among the works of the Parisian period should be counted the Course on the Logica vetus (Lewry 1978), which consist of a set of commentaries on the Isagoge, Praedicamenta, Perihermeneias, Liber sex principiorum, and Liber divisionum Boethii, the commentaries on the Analytica priora (c. 1240, Ebbesen 1997; published as Giles of Rome), on the Analytica posteriora, on the Priscianus minor, the In librum topycorum, on the Sophistici elenchi. From the Oxford period are the works De natura relationis, De ortu scientiarum, De spiritu fantastico, De tempore, Quaestiones in quattuor libros sententiarum, De 43 questionibus, Epistola ad Petrum de Confleto. From the same period are also some minor theological works, as the De confessione, De necessitate incarnationis, De conscientia et de synderesi, the Tabulae super originalia patrum, the Arbor consanguinitatis et affinitatis, and some sermons (the Sermo in capite ieiunii and the Sermo in dominica in passione). Worth mentioning is a letter expressing some criticism over Franciscan poverty (Epistola ad novitios de excellentia ordine praedicatorum), which survives in Pecham’s answer (Tractatus contra fratrem Robertum Kilwarby). Considered unauthentic are the commentary on the Priscianus maior, and the Sophismata grammaticalia (Rosier 2007). Doubts have also been cast concerning the authorship of the commentaries In barbarismum Donati, the De accentu prisciani, and the Sophismata logicalia. The identification (Gtil 1953) of the commentaries on the Physics, Metaphysics ascribed to him by the Catalogus Stamsensis has been questioned (Callus 1963) and is now thought to be the work of Geoffrey of Aspall.