This work marks a major contribution both in semiotics and in the general history of philosophy. For the Conimbricenses on signs is a part of the whole of the Latin Age, the 'medieval period' separating ancient Greek thought, first from modern philosophy, and now from the postmodern development wherein the lost Latin centuries between Ockham and Descartes are recovered and restored to their rightful place as an organic part of the overall medieval development. This development began indeed with Augustine but, after all, neither wholly culminated in Aquinas nor terminated in Ockham.