Central topics in medieval logic are here treated in a way that is congenial to the modern reader, without compromising historical reliability. The achievements of medieval logic are made available to a wider philosophical public then the medievalists themselves. The three genres of logica moderna arising in a later Middle Ages are covered: obligations, insolubles and consequences - the first time these have been treated in such a unified way. The articles on obligations look at the role of logical consistence (...) in medieval disputation techniques. Those on insolubles concentrate on medieval solutions to the Liar Paradox. There is also a systematic account of how medieval authors described the logical content of an inference, and how they thought that the validity of an inference could be guaranteed. (shrink)

The essays in this book give the first comprehensive picture of the medieval development of philosophical theories concerning the nature of emotions and the influence they have on human choice.

In this paper I present a new approach to the so called ars obligatoria of the thirteenth and early fourteenth century. In standard medieval disputations an opponent attacks a thesis defended by the respondent. Some thirteenth-century authors distinguish two duties that the respondent has. First, he must grant whatever seems to be true. Second, he must grant whatever follows from what he has already granted. When the first duty is overridden by the specific duty to defend a false thesis (which (...) is the main requirement of ars obligatoria), the second duty becomes the logical duty of keeping the set of one's answers consistent. A natural result of this model is the development of a concept of possibility based on the syntactic concept of formally correct inference, and not on any semantic considerations. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:Concordance to Descartes’ “Meditationes de Prima Philosophia.” by Katsuzo Murakami, Meguru Sasaki, Tetsuichi NishimuraTuomo Aho and Mikko YrjönsuuriKatsuzo Murakami, Meguru Sasaki, and Tetsuichi Nishimura. Concordance to Descartes’ “Meditationes de Prima Philosophia.” Hildesheim: Olms-Weidmann, 1995. Pp. v + 355. Cloth, DM 198.00.This is a product from the Descartes database of Tokyo University scholars. It gives an account of the occurrences and contexts of words in the Meditationes (the main (...) text only), aiming at a complete survey of vocabulary. The work keeps strictly to the form of a lexical concordance; in addition to the word lists, there is only a brief instruction. (A bibliographical note about editions might be useful.) Technical realization is excellent. But concordances like this are big and expensive books; could they possibly be published more easily in electronic format?Most words of Descartes’s text are included in the main concordance. There they are listed following the alphabetic order of standard dictionaries, and in each entry the total amount of occurrences of the word is announced. Then every occurrence is quoted in its context (one line = approximately two in the Adam-Tannery standard edition). Quotes within each entry are arranged and their places identified by digits showing the page and line in AT edition.Some function words and most indeclinables are placed in an index which gives only the numbers and locations of their occurrences. In most cases this is certainly reasonable, but some choices are problematic. For example, why have the 638 + 36 occurrences of qui in its two senses (‘who’, ‘what’; ‘how’, ‘whereby’) been printed with full contexts, while the philosophically interesting adverb plane (‘plainly’, 55 times) is to be found merely in the index?Concordances are uncommon for modern philosophy, but they are familiar and valuable tools in work with ancient texts. Obviously they function in linguistic research, and even the present Descartes book has largely the same goal: to serve the study of neo-Latin language. Undoubtedly, a rigorous case study like this is important for such [End Page 135] investigations. (There remains, however, a difficulty, as the editors point out, because the AT text differs from original editions, mainly in matters of orthography and punctuation.) But also a completely nonlinguistic philosopher can benefit from this material. It is useful to see all occurrences of a word together and at once; many careless generalizations could be avoided by checking from a concordance.One can make amusing observations at random. Thus some terms have remarkably low frequencies (notitia, qualitas occur 4 times; materia 3 times; absolutus, principium 2 times; abstractus, definire, dispositio, species 1 time; intentio, possibile not at all). On the other hand, there is an overwhelming concentration on the semantic family round cogitare, cognoscere, comprehendere, concipere, percipere. Descartes has some idiosyncratic favorites, like advertere/animadvertere. One also notices his strong liking for words of seeing and light (15 arguments from lumen naturale!). It hardly is a surprise that his most cherished favorite is ego (492 times).Tuomo Aho and Mikko Yrjönsuuri University of HelsinkiCopyright © 1998 Journal of the History of Philosophy, Inc... (shrink)

The aim of the present work is to show the roots of the conception of perception as an active process, tracing the history of its development from Plato to modern philosophy. The contributors inquire into what activity is taken to mean in different theories, challenging traditional historical accounts of perception that stress the passivity of percipients in coming to know the external world. Special attention is paid to the psychological and physiological mechanisms of perception, rational and non-rational perception and the (...) role of awareness in the perceptual process. Perception has often been conceived as a process in which the passive aspects - such as the reception of sensory stimuli - were stressed and the active ones overlooked. However, during recent decades research in cognitive science and philosophy of mind has emphasized the activity of the subject in the process of sense perception, often associating this activity to the notions of attention and intentionality. Although it is recognized that there are ancient roots to the view that perception is fundamentally active, the history remains largely unexplored. The book is directed to all those interested in contemporary debates in the fields of philosophy of mind and cognitive psychology who would like to become acquainted with the historical background of active perception, but for historical reliability the aim is to make no compromises. (shrink)

Finland is internationally known as one of the leading centers of twentieth century analytic philosophy. This volume offers for the first time an overall survey of the Finnish analytic school. The rise of this trend is illustrated by original articles of Edward Westermarck, Eino Kaila, Georg Henrik von Wright, and Jaakko Hintikka. Contributions of Finnish philosophers are then systematically discussed in the fields of logic, philosophy of language, philosophy of science, history of philosophy, ethics and social philosophy. Metaphilosophical reflections on (...) the nature of philosophy are highlighted by the Finnish dialogue between analytic philosophy, phenomenology, pragmatism, and critical theory. (shrink)

The paper considers two kinds of medieval obligational disputations and the medieval genre of sophismata in relation to the kinds of inferences accepted in them. The main texts discussed are the anonymous Obligationes parisienses from the early 13th century and Richard Kilvington’s Sophismata from the early 14th century. Four different kinds of warranted transition from an antecedent to a consequent become apparent in the medieval discussions: the strong logical validity of basic propositional logic, analytic validity based on conceptual containment, merely (...) semantic impossibility of the antecedent being true without the consequent, and intuitively true counterfactual conditionals. As these different kinds of consequences are spelled out by means of obligational disputations, it appears that the genre of obligations is indeed useful for the “knowledge of consequences,” as the anonymous Obligationes parisienses claims. (shrink)

In this paper, Ockham's theory of an ideal language of thought is used to illuminate problems of interpretation of his theory of truth. The twentieth century idea of logical form is used for finding out what kinds of atomic sentences there are in OckhamÕs mental language. It turns out that not only the theory of modes of supposition, but also the theory of supposition in general is insufficient as a full theory of truth. Rather, the theory of supposition is a (...) theory of reference, which can help in the determination of truth values within the scope of simple predications. Outside this area, there are interesting types of sentences, whose truth does not depend on whether the terms supposit for the same things or not for the same things. (shrink)