This is the first of a three-volume anthology intended as a companion to The Cambridge History of Later Medieval Philosophy. Volume 1 is concerned with the logic and the philosophy of language, and comprises fifteen important texts on questions of meaning and inference that formed the basis of Medieval philosophy. As far as is practicable, complete works or topically complete segments of larger works have been selected. The editors have provided a full introduction to the volume and detailed introductory headnotes to each text; the volume is also indexed comprehensively.