This edited volume presents new lines of research dealing with the language of thought and its philosophical implications in the time of Ockham. It features more than 20 essays that also serve as a tribute to the ground-breaking work of a leading expert in late medieval philosophy: Claude Panaccio. Coverage addresses topics in the philosophy of mind and cognition (externalism, mental causation, resemblance, habits, sensory awareness, the psychology, illusion, representationalism), concepts (universal, transcendental, identity, syncategorematic), logic and language (definitions, syllogisms, modality, supposition, obligationes, etc.), action theory (belief, will, action), and more. A distinctive feature of this work is that it brings together contributions in both French and English, the two major research languages today on the main theme in question. It unites the most renowned specialists in the field as well as many of Claude Panaccio’s former students who have engaged with his work over the years. In furthering this dialogue, the essays render key topics in fourteenth-century thought accessible to the contemporary philosophical community without being anachronistic or insensitive to the particularities of the medieval context. As a result, this book will appeal to a general population of philosophers and historians of philosophy with an interest in logic, philosophy of language, philosophy of mind, and metaphysics.

The notion that human thought is structured like a language, with a precise syntax and semantics, has been pivotal in recent philosophy of mind. Yet it is not a new idea: it was systematically explored in the fourteenth century by William of Ockham and became central in late medieval philosophy. Mental Language examines the background of Ockham's innovation by tracing the history of the mental language theme in ancient and medieval thought. Panaccio identifies two important traditions: one philosophical, stemming from Plato and Aristotle, and the other theological, rooted in the Fathers of the Christian Church. The study then focuses on the merging of the two traditions in the Middle Ages, as they gave rise to detailed discussions over the structure of human thought and its relations with signs and language. Ultimately, Panaccio stresses the originality and significance of Ockham's doctrine of the oratio mentalis (mental discourse) and the strong impression it made upon his immediate successors.

The Middle Ages span a period of well over a millennium: from the emperor Constantine's Christian conversion in 312 to the early sixteenth century. During this time there was remarkable continuity of thought, but there were also many changes made in different philosophies: various breaks, revivals and rediscoveries. David Luscombe's history of Medieval Thought steers a clear path through this long period, beginning with three great influences on medieval philosophy: Augustine, Boethius, and Pseudo-Denis, and focusing on Alcuin, then Anselm, Abelard, Aquinas, Ockham, Duns Scotus, and Eckhart amongst others from the twelfth to the fifteenth century. Medieval philosophy is widely regarded as having a theological and religious orientation, but more recently attention has been given to the early study of logic, language, and the philosophy of science. This history therefore gives a fascinating insight into medieval views on aspects such as astronomy, materialism, perception, and the nature of the soul, as well as of God.

Richard Cross provides the first complete and detailed account of Duns Scotus's theory of cognition, tracing the processes involved in cognition from sensation, through intuition and abstraction, to conceptual thought. He provides an analysis of the ontological status of the various mental items (acts and dispositions) involved in cognition, and a new account of Scotus on nature of conceptual content. Cross goes on to offer a novel, reductionist, interpretation of Scotus's view of the ontological status of representational content, as well as new accounts of Scotus's opinions on intuitive cognition, intelligible species, and the varieties of consciousness. Scotus was a perceptive but highly critical reader of his intellectual forebears, and this volume places his thought clearly within the context of thirteenth-century reflections on cognitive psychology, influenced as they were by Aristotle, Augustine, and Avicenna. As far as possible, Duns Scotus's Theory of Cognition traces developments in Scotus's thought during the ten or so highly productive years that formed the bulk of his intellectual life.

This book studies medieval theories of free will, including explanations of how angels - that is, ideal agents - can choose evil.

'This sentence is false' - is that true? The 'Liar paradox' embodied in those words exerted a particular fascination on the logicians of the Western later Middle Ages, and, along with similar 'insoluble' problems, forms the subject of the first group of articles in this volume. In the following parts Professor Spade turns to medieval semantic theory, views on the relationship between language and thought, and to a study of one particular genre of disputation, that known as 'obligationes'. The focus is on the Oxford scholastics of the first half of the 14th century, and it is the name of William of Ockham which dominates these pages - a thinker with whom Professor Spade finds himself in considerable philosophical sympathy, and whose work on logic and semantic theory has a depth and richness that have not always been sufficiently appreciated.

A major contribution to the history of philosophy in the later medieval period (1250-1350).