PONTIFICAL INSTITUTE OF MEDIAEVAL STUDIES Thierry of Chartres. Commentaries on Boethius by Thierry of Chartres and His School. Edited by Nikolaus M. Häring. Studies and Texts 20. 1971; 619 pp. ISBN 0–88844–020– 0 | 978–0–88844–020–4. This volume contains critical editions of the following works, together with an introduction, bibliography, sources quoted by Thierry, and glossary: Commentum super Boethii librum de Trinitate Fragmentum Admuntense: De Hebdomadibus Lectiones in Boethii librum de Trinitate Fragmentum Londinense: Contra Eutychen Glosa super Boethii librum de Trinitate Tractatus de Trinitate Abbreviatio Monacensis Commentarius Victorinus Tractatus de sex dierum operibus “ ‘Thierry the Platonist’ was a famous and influential master of the midtwelfth century. The acuteness of his mind, very evident in these commentaries, was also felt in his conversation. The author of the Metamorphosis Goliae remarked that ‘the sharp tongue of this doctor of Chartres cuts like a sword.’ However, he could have no cause for complaint about the standard of this edition of his literary remains, in which an excellent critical apparatus is supported by useful introductions, a detailed glossary and a very good bibliography.” – The Heythrop Journal