This volume is an homage to the great intellectual contribution made by Loris Sturlese to the field of history of medieval philosophy. Its point of departure lies in a methodological line, which Sturlese has maintained throughout his whole academic the importance in the historical and conceptual reconstruction of medieval philosophical thought of focusing not only on the classical, most famous centers of knowledge production and transmission, but also on the often-neglected peripheries, which during the Middle Ages were increasingly more relevant in propelling the circulation of texts and ideas. In this volume, the notions of 'center' and 'periphery' are not understood in a merely geographical sense, but also in conceptual, linguistic, historical and literary terms. The richness of this approach is demonstrated by the broad spectrum of the contributions, which range from Islamic philosophy to Italian Renaissance, including the reception of ancient philosophy and of Arabic scientific works in the Latin world, and up to eighteenth-century French geography. Special attention is devoted to the philosophical thought developed in the German area. The volume does not lack in giving space to important medieval figures, such as Dante, as well as to more general philosophical notions, such as the concept of rationality.