Few philosophical books have been so influential in the development of Western thought as Aristotle’s Metaphysics . For centuries Aristotle’s most celebrated work has been regarded as a source of inspiration as well as the starting point for every investigation into the structure of reality. Not surprisingly, the topics discussed in the book – the scientific status of ontology and metaphysics, the foundations of logical truths, the notions of essence and existence, the nature of material objects and their properties, the status of mathematical entities, just to mention some – are still at the centre of the current philosophical debate and are likely to excite philosophical minds for many years to come. This volume reconstructs in fourteen chapters a particular phase in the long history of the Metaphysics by focusing on the medieval reception of Aristotle’s masterpiece, specifically from its introduction in the Latin West in the twelfth through fifteenth centuries. Contributors include: Marta Borgo, Matteo di Giovanni, Amos Bertolacci, Silvia Donati, Gabriele Galluzzo, Alessandro D. Conti, Sten Ebbesen, Fabrizio Amerini, Giorgio Pini, Roberto Lambertini, William O. Duba, Femke J. Kok, and Paul J.J.M. Bakker.