This collection of essays studies the movement of texts in the Mediterranean basin in the medieval period from historical and philological perspectives. Rejecting the presumption that texts simply travel without changing, the contributors examine closely the nature of these writings, which are concerned with such topics as science and medicine, and how they changed over the course of their journeys. Transit and transformation give texts new subtexts and contexts, providing windows through which to study how memory, encryption, oral communication, cultural and religious values, and knowledge traveled and were shared, transformed, and preserved. This volume broadens how we think about texts, communication, and knowledge in the medieval world. Aside from the editors, the contributors are Mushegh Asatryan, Brian N. Becker, Leonardo Capezzone, Leigh Chipman, Ofer Elior, Zohar Hadromi-Allouche, B. Harun Küçük, Israel M. Sandman, and Tamás Visi.