Ockham holds what nowadays would be characterized as a “higher-order perception” theory of consciousness. Among the most common objections to such a theory is the charge that it gives rise to an infinite regress in higher-order states. In this paper, I examine Ockham’s various responses to the regress problem, focusing in particular on his attempts to restrict the scope of consciousness so as to avoid it. In his earlier writings, Ockham holds that we are conscious only of those states to (...) which we explicitly attend. This view, I go on to argue, is inadequate on both phenomenological and philosophical grounds. Interestingly, and perhaps for this very reason, in later works, Ockham goes on to develop an alternative explanation for his account of the limited scope of consciousness. (shrink)

The nature and content of the thought of Duns Scotus (c. 1266-1308) remains largely unknown except by the expert. This book provides an accessible account of Scotus' theology, focusing both on what is distinctive in his thought, and on issues where his insights might prove to be of perennial value.

In Ockham's Assumption of Mental Speech: Thinking in a World of Particulars, Sonja Schierbaum offers a detailed philosophical reconstruction of William Ockham's (1287-1349) conception of mental speech. Ockham's conception provides a rich account of cognition and semantics that binds together various philosophical issues and forms a point of departure for many later and even contemporary debates. The book analyses the role of mental speech for the semantics and the use of linguistic expressions as well as its function within Ockham's cognitive (...) theory and epistemology. Carefully balancing Ockham's position against contemporary appropriations in the light of Fodor's LOTH, it allows us to understand better Ockham's view on human thought and its relation to language. (shrink)

In Animal Rationality: Later Medieval Theories 1250-1350, Anselm Oelze offers the first comprehensive and systematic exploration of theories of animal rationality in the later Middle Ages.

This paper is dedicated to William of Ockham’s theory of habit, which he considers to be a disposition of a power of the soul. I will argue that Ockham’s view on the relation between a habit and its manifestation sheds new light on his well-known thesis that sensible and intelligible species are not needed to account for cognition. The identity conditions of habits are themselves the ground of their intentionality: there is no way to track a habit from an act (...) of a given kind except by stipulating a causal relation between them. In this sense, a study of Ockham’s theory of habit is a step towards our understanding of the relation between similarity and causation in his theory of intentionality. Ockham’s theory of habit accommodates intentional phenomena that, contrary to the scholarly consensus, are not ipso facto semantic phenomena. (shrink)

Was ist eine menschliche Person? Durch welche besonderen Eigenschaften zeichnet sie sich aus? Und wodurch unterscheidet sie sich von einem blossen Lebewesen? Mittelalterliche Autoren widmeten sich mit viel Scharfsinn diesen Fragen, indem sie sich auf drei Dimensionen einer Person konzentrierten. Sie setzten bei der metaphysischen Dimension an, indem sie eine Person als eine individuelle Substanz mit einer rationalen Natur bestimmten. Dies fuhrte sie dazu, diese Substanz genauer zu untersuchen: ihre wesentlichen Bestandteile, ihre Einheit und ihre Identitat uber die Zeit hinweg. (...) Sie beschaftigten sich aber auch mit der psychologischen Dimension, indem sie die Reflexionsfahigkeit als die entscheidende geistige Fahigkeit einer Person analysierten. Zudem berucksichtigten sie die handlungstheoretische Dimension, indem sie festhielten, dass eine Person im Gegensatz zu einem blossen Lebewesen Handlungen hervorbringen kann. Sie betonten sogar, dass sich eine Person frei fur Handlungen entscheiden kann und daher fur sie verantwortlich ist. Dieses Buch, das sich auf Theorien des 13. und 14. Jahrhunderts konzentriert, rekonstruiert die Debatten zu allen drei Dimensionen im historischen Kontext, wertet sie systematisch aus und schlagt dabei auch einen Bogen zu fruhneuzeitlichen und gegenwartigen Diskussionen. Es verdeutlicht, dass im Mittelalter die Grundlagen fur eine philosophische Anthropologie gelegt wurden. (shrink)

Die Intentionalitätsproblematik steht nicht nur im Mittelpunkt der heutigen philosophischen und kognitionstheoretischen Debatten. Sie wurde bereits im Mittelalter scharfsinnig diskutiert, ja die scholastischen Autoren prägten als Erste die Fachausdrücke "Intentionalität" und "intentionale Existenz" und entwarfen verschiedene Modelle, um das Rätsel der kognitiven Bezugnahme zu lösen. Dieses Buch stellt fünf einflußreiche Intentionalitätsmodelle vor, die im 13. und 14. Jahrhundert entstanden sind. Dabei werden so unterschiedliche Autoren wie Thomas von Aquin, Petrus Johannes Olivi, Dietrich von Freiberg, Johannes Duns Scotus, Petrus Aureoli, Hervaeus (...) Natalis, Wilhelm von Ockham und Adam Wodeham berücksichtigt. -/- "Die anschauliche und präzise Art, in der Perler mit den Denkern des Mittelalters und der Gegenwart argumentierend spricht, lockert seine gestrenge Gedankenarbeit auf, ohne darüber hinwegzutäuschen, daß dieses Buch eine Reihe von Entdeckungen und Klärungen enthält, wie sie auf diesem schwierigen Feld selten vorkommen. Er bietet eine Meisterleistung an Konzentration und Darstellungskunst. Wenige Bücher zur Philosophie des Mittelalters vereinen so glücklich wie dieses geschichtlichen Takt und Problemsinn." Kurt Flasch -/- The problem of intentionality is not only at the centre of today's philosophical and cognitive theory debates. It was already discussed astutely in the Middle Ages; indeed the scholastic authors were the first to coin the technical terms "intentionality" and "intentional existence" and designed various models to solve the riddle of cognitive reference. This book presents five influential models of intentionality that emerged in the 13th and 14th centuries. It takes into account authors as different as Thomas Aquinas, Petrus Johannes Olivi, Dietrich von Freiberg, Johannes Duns Scotus, Petrus Aureoli, Hervaeus Natalis, Wilhelm von Ockham and Adam Wodeham. Upun reading this book, Kurt Flasch remarks that it "contains a wealth of discoveries and clarifications that are rare in this difficult field. [Perler] offers a masterly performance of concentration and art of representation [...]. Few books on medieval philosophy succeed so thoroughly in uniting historical and philosophical perspicacity such as this one". (shrink)

William of Ockham (c.1287-1347) is known to be one of the major figures of the late Middle Ages. The scope and significance of his doctrine of human thought, however, has been a controversial issue among scholars in the last decade, and this book presents a full discussion of recent developments. Claude Panaccio proposes a richly documented and entirely original reinterpretation of Ockham's theory of concepts as a coherent blend of representationalism, conceptual atomism, and non reductionist nominalism, stressing in the process (...) its special interest for current discussions in philosophy of mind and cognitive sciences. (shrink)

In this book Han Thomas Adriaenssen offers the first comparative exploration of the sceptical reception of representationalism in medieval and early modern philosophy. Descartes is traditionally credited with inaugurating a new kind of scepticism by saying that the direct objects of perception are images in the mind, not external objects, but Adriaenssen shows that as early as the thirteenth century, critics had already found similar problems in Aquinas's theory of representation. He charts the attempts of philosophers in both periods to (...) grapple with these problems, and shows how in order to address the challenges of scepticism and representation, modern philosophers in the wake of Descartes often breathed new life into old ideas, remoulding them in ways that we are just beginning to understand. His book will be valuable for historians interested in the medieval background to early modern thought, and to medievalists looking at continuity with the early modern period. -/- . (shrink)

In this paper, I proceed from the assumption that Ockham’s account of self-awareness can be correctly described as a kind of higher-order approach, because just like modern higher-order theorists, Ockham accounts for a mental act being conscious in terms of a higher-order act that takes the act as its object. I aim to defend Ockham’s approach against the objection that it fails to provide an explanation of how self-awareness comes about because any such explanation would be circular. Part of the (...) critique, in light of recent findings in Ockham scholarship, is that the ontological identity of the subject does not suffice to explain – in a non-circular way – the psychological identity and unity of the subject of awareness. Here, I argue that Ockham can respond to this objection by highlighting the power of will. Roughly speaking, the idea is that he can account for the limits of the psychological subject in terms of what the subject can want or will with respect to her own acts and these acts alone. It is along these lines that Ockham can account for the asymmetry between first-person and third-person perspective in a non-circular way, with reference to the exotic case of angelic mind-reading and the comparatively less exotic case of human memory. (shrink)

Richard Cross provides the first full study of Duns Scotus's theory of cognition, examining his account of the processes involved in cognition, from sensation, through intuition and abstraction, to conceptual thought. Cross places Scotus's thought clearly within the context of 13th-century study on the mind, and of his intellectual forebears.