Dimitri Gutas, Theophrastus, On First Principles (known as his Metaphysics). Greek Text and Medieval Arabic Translation, Edited and Translated with Introduction, Commentaries and Glossaries, as Well as the Medieval Latin Translation, and with an Excursus on Graeco-Arabic Editorial Technique. Leiden-Boston: Brill, 2010. XXIII + 506 pp., indices. ISBN 13:978-9-004-17903-5.