This is the fourth and last volume of the translation in this series of the commentary on Aristotle On the Soul, wrongly attributed to Simplicius. Its real author, most probably Priscian of Lydia, proves in this work to be an original philosopher who deserves to be studied, not only because of his detailed explanation of an often difficult Aristotelian text, but also because of his own psychological doctrines. In chapter six the author discusses the objects of the intellect. In chapters seven to eight he sees Aristotle as moving towards practical intellect, thus...

This is the first edition ever of Moerbeke's Latin translation of Ptolemy s celebrated astrological handbook, known under the title Tetrabiblos or Quadripartitum (opus). Ptolemy s treatise (composed after 141 AD) offers a systematic overview of astrological science and had, together with his Almagest, an enormous influence up until the 17th century. In the Latin Middle Ages the work was mostly known through translations from the Arabic. William of Moerbeke s translation was made directly from the Greek and it is a major scholarly achievement manifesting not only Moerbeke s genius...