Inside view of fifty years of the Aristoteles Latinus project, a cornerstone of the study of medieval intellectual history. For fifty years, the Aristoteles Latinus project has studied how our understanding of how Aristotle entered the Latin Middle Ages. Based in Leuven and rooted in early twentieth-century international collaboration, the Aristoteles Latinus project has traced the complex paths by which Aristotle’s works were translated, read, and transmitted in medieval times. This volume brings together studies first presented at a conference marking the fiftieth anniversary of the project and offers leading international scholars’ perspectives on the project’s ongoing work, ranging from manuscript traditions, philology and translation to natural philosophy, logic, metaphysics, and the study of medieval manuscripts. Together, the contributions show how deeply Aristotelian thought permeated medieval intellectual culture and highlight the continued vitality and range of current research on Aristoteles Latinus. Written with clarity and accessibility, the book will be of interest to historians of philosophy, medievalists, and philologists and anyone curious about medieval intellectual life. For fifty years, the Aristoteles Latinus project has studied how our understanding of how Aristotle entered the Latin Middle Ages. Based in Leuven and rooted in early twentieth-century international collaboration, the Aristoteles Latinus project has traced the complex paths by which Aristotle’s works were translated, read, and transmitted in medieval times. This volume brings together studies first presented at a conference marking the fiftieth anniversary of the project and offers leading international scholars’ perspectives on the project’s ongoing work, ranging from manuscript traditions, philology and translation to natural philosophy, logic, metaphysics, and the study of medieval manuscripts. Together, the contributions show how deeply Aristotelian thought permeated medieval intellectual culture and highlight the continued vitality and range of current research on Aristoteles Latinus. Written with clarity and accessibility, the book will be of interest to historians of philosophy, medievalists, and philologists and anyone curious about medieval intellectual life. Introduction Nena Bobovnik, Clelia V. Crialesi, and Lisa Devriese Gigantum umeris insidentes: The Aristoteles Latinus and the Corpus Philosophorum Medii Aevi Pietro B. Rossi The Latin Translation of the De mirabilibus auscultationibus by Bartholomew of Messina: Remarks on its Manuscript Transmission and its Greek Sources Ciro Giacomelli Doubting Thomas: A Hesitation in Aquinas While Re-reading Aristotle Andrea Aldo Robiglio Exploring Aristotle’s Words: The tabulae librorum philosophorum in the ms. Pisa, Bibliotheca Cathariniana, 124 and the Aristotelian Corpus in the Mid-Thirteenth Century Riccardo Saccenti The Meaning of Ut excedentia et excessa and the Curious Case of William of Moerbeke’s Translation of Metaphysica 5.15 (1020b26–28) Stephen M. Metzger Thirteenth-Century Latin Commentators of the Metaphysica on the Relationship Between Alpha Meizon and Alpha Elatton: A Problem of Translation and Interpretation Silvia Donati Aristotle on Being as True in Greek, Arabic, and Latin: Metaphysics Δ.7, 1017a31–35, Across Three Philosophical Traditions Marta Borgoa, Davide Falessib, and mostafa najafic The Aristotelian Library of Nicholas of Cusa: The Case of the Metaphysica Luca Burzelli and Mario Meliadò Peter of Abano as Reader of Pseudo-Aristotle’s Physiognomonica Elena Berti On the Appetite of Plants: Averroean Elements in Commentaries on the De plantis (Thirteenth to Fourteenth Century) Marilena Panarelli Aristotelizing Pseudo-Aristotle in Medieval Hebrew Manuscripts of the Book of the Apple (Sefer ha-tapuaḥ) Ioana Curuț Index nominum (ante 1800) Index codicum manu scriptorum