Speculum Divinorum et Quorundam Naturalium, Parts IV-V: On the Nature of Matter, on the Intellect as Form of Man.Henricus Bate , Carlos SteelSpeculum Divinorum et Quorundam Naturalium, Parts VI-VII: On the Unity of Intellect, On the Platonic Doctrine of the Ideas.Henricus Bate , C. Steel , Emiel van de Vyver.