This volume comprises Parts XIII XVI of the Speculum Divinorum et Quorundam Naturalium of Henricus Bate and includes "On Thinking and Happiness."

This volume comprises Parts IV V of the Speculum Divinorum et Quorundam Naturalium of Henricus Bate and includes "On the Nature of Matter" and "On the Intellect as Form of Man."

This volume presents a critical edition of the final parts of Bate's Speculum. In these parts, which constitute the culmination of his Platonic-Aristotelian encyclopedia, Bate outlines a 'holistic' world-picture. Parts XX to XXII are devoted to the main topics of scholastic cosmology (the eternity of the world, the union of the heavenly bodies and their separate movers, the number and harmony of the spheres). Some original passages are of special interest for the history of medieval science: particularly Bate's theory of magnetism, his comments on observational errors, and his...