MEDIEVAL LOGICS LAMBERT MARIE DE RIJK (ed.), Die mittelalterlichen Traktate De mod0 opponendiet respondendi, Einleitung und Ausgabe der einschlagigen Texte. (Beitrage zur Geschichte der Philosophie und Theologie des Mittelalters, Neue Folge Band 17.) Miinster: Aschendorff, 1980. 379 pp. No price stated. THE SEVENTEENTH CENTURY MARTA FATTORI, Lessico del Novum Organum di Francesco Bacone. Rome: Edizioni dell'Ateneo 1980. Two volumes, il + 543, 520 pp. Lire 65.000. VIVIAN SALMON, The study of language in 17th century England. (Amsterdam Studies in the Theory (...) and History of Linguistic Science, Series 111: Studies in theHistory of Linguistics, Volume 17.) Amsterdam: John Benjamins B.V., 1979.x + 218 pp. Dfl. 65. Theoria cum Praxi. Zum Verhaltnis von Theorie und Praxis im 17. und 18. Jahrhundert. (Akten des 111. Internationalen Leibnizkongress, Hannover, 12. bis 17.November 1977, Band 111: Logik, Erkenntnistheorie, Wissenschaftstheorie, Metaphysik, Theologie.) Wiesbaden: Franz Steiner Verlag, 1980. vii + 269 pp. DM 48. CLASSICAL AND NON-CLASSICAL LOGICS MICHAEL CLARK, The place of syllogistic in logical theory. Nottingham: University of Nottingham Press, 1980. ix + 151 pp. £3.00. A.F. PARKER-RHODES, The theory of indistinguishables. Dordrecht, Boston and London: D. Reidel Publishing Company, 1981. xvii + 216 pp. Dfl.90.00/$39.50. NICHOLAS RESCHER and ROBERT BRANDOM, The logic of inconsistency. Oxford:Basil Blackwell, 1980. x + 174 pp. f 11.50. MISCELLANEOUS J. ZELENY, The logic of Marx. Translated from the German by T. Carver. Oxford: Basil Blackwell, 1980. xcii + 247 pp. £12.50. FELIX KAUFMANN, The infinite in mathematics. Edited by Brian McGuinness. Introduction by E. Nagel. Translation from the German by Paul Foulkes. Dordrecht: Reidel, 1978. xvii + 235 pp. Dfl 85/$39.50 (cloth); Dfl 45/$19.95 (paper). PAMELA MCCORDUCK, Machines who think. San Francisco: W.H. Freeman and Company, 1979. xiv + 275 pp. $14.95. J. MITTELSTRASS (ed.), Enzyklopadie Philosophie und Wissenschaftstheorie Bd. 1 : A-G. Mannheim, Wien, Ziirich: Bibliographisches Institut, 1980. 835 pp. DM 128. (shrink)

Detlev Clüver (1645-1708) was among the first to criticize Leibniz's new infinitesimal analysis. Although his criticisms were vague and his methods inconsistent, Leibniz had always for him a friendly sort of consideration. The article presents Clüver's biography, writings, and thought, together with a detailed description of Leibniz's relations to him and of their correspondence, and contains a bibliography of Clüver's writings.

_Zettel, _ an en face bilingual edition, collects fragments from Wittgenstein's work between 1929 and 1948 on issues of the mind, mathematics, and language.

J. G. Fichte’s »Tagebuch über den [animalischen] Magnetismus« [»Diary of the [animal] Magnetism«] from 1813 consists largely of excerpts and comments on reports from patients who have been treated with applications of animal magnetism. As part of the preparations for the critical edition of Fichte’s „Tagebuch über den Magnetismus“ the central text on which Fichte founded his further philosophical considerations could be identified: It is Franz Anton Mesmer’s „Allgemeine Erläuterungen über den Magnetismus und den Somnambulismus. Als vorläufige Einleitung in das (...) Natursystem.“ [„General Explanations about magnetism and somnambulism. As a preliminary introduction to the system of nature.”] of 1812. The following article shows how Fichte came into touch with the subject of animal magnetism and how he specifically dealt with Mesmer’s text. Mesmer’s concern to develop a unified conception of nature that brings all the laws of nature into a closed system matches with Fichte’s intention to form a systematic unity of all knowledge. However, Fichte discovered in Mesmer’s project several problematic concepts such as the constitution of the organism and of man as a spiritual being, which Fichte criticizes and makes the starting point for his own ideas. His idea of a liberal-idealistic and thus dynamic system of nature always remains present.J. G. Fichtes „Tagebuch über den [animalischen] Magnetismus“ aus dem Jahr 1813 besteht zum großen Teil aus Exzerpten und Kommentaren zu Berichten von Kranken, die mit Anwendungen des animalischen Magnetismus behandelt worden sind. Im Rahmen der Vorbereitungen für die kritische Herausgabe von Fichtes „Tagebuch über den [animalischen] Magnetismus“ konnte der zentrale Text, dessen kritische Lektüre Fichte zu seinen weitergehenden philosophischen Überlegungen führt, identifiziert werden: Es handelt sich um Franz Anton Mesmers „Allgemeine Erläuterungen über den Magnetismus und den Somnambulismus. Als vorläufige Einleitung in das Natursystem.“ von 1812. Im folgenden Aufsatz wird gezeigt, wie Fichte mit der Thematik des animalischen Magnetismus in Berührung kam und wie er sich speziell mit Mesmers Text auseinandersetzte. Mesmers Anliegen, eine einheitliche Naturkonzeption zu entwickeln, die alle Naturgesetzlichkeiten in ein geschlossenes System bringt, kommt Fichtes Intention nach systematischer Einheit allen Wissens entgegen. Allerdings entdeckt Fichte bei Mesmer etliche problematische Konzepte, etwa zur Konstitution des Organismus und des Menschen als geistigem Wesen, die er kritisiert und zum Ausgangspunkt eigener Überlegungen macht. Die Idee eines freiheitlich-idealistischen und damit dynamischen Natursystems bleibt dabei stets präsent. (shrink)

This book is a collection of essays published by the author in the long run of about 20 years and is centered on the reconstruction of Leibniz’s logical calculi. All the essays have been revised for the present edition and some of them constituted the background for Lenzen’s first monograph on Leibniz’s logic. A feature common to all these essays is the vindication of the relevance and originality of Leibniz’s logical achievements. Lenzen manifests strong dissatisfaction with the evaluations of Leibniz’s (...) logic previously offered by interpreters like Louis Couturat, Clarence I. Lewis, Karl Dürr, William and Martha Kneale, and states that till now Leibniz’s results in the field of logic have been widely underestimated. The book contains a careful and detailed examination of almost all Leibniz’s papers on the logical calculus and it is based on the knowledge of a wide range of texts unknown to previous interpreters. Lenzen’s acquaintance with the entire corpus of Leibniz’s logical texts is impressive. Some chapters of the book in particular contain very solid and useful logical analyses. Chapter 7, for instance, includes the most profound account of Leibniz’s theory of negation I ever read. Chapter 8 presents in a very clear way Leibniz’s attempt to reduce traditional syllogistic to a calculus based on logical inclusion between terms. Chapter 14 is devoted to Leibniz’s a priori proof of the existence of God and presents the first edition of an important manuscript on the proof. On chapters 3 and 5 a series of convincing reasons are given to argue that Leibniz’s concept of ens does not have to be considered a constant in the logical calculus. In brief: this work discusses a wide range of topics in such a clear and learned way that it will surely become a reference book for scholars interested in the study of Leibniz’s logical papers in the forthcoming years. (shrink)

This book is a collection of essays published by the author in the long run of about 20 years and is centered on the reconstruction of Leibniz’s logical calculi. All the essays have been revised for the present edition and some of them constituted the background for Lenzen’s first monograph on Leibniz’s logic. A feature common to all these essays is the vindication of the relevance and originality of Leibniz’s logical achievements. Lenzen manifests strong dissatisfaction with the evaluations of Leibniz’s (...) logic previously offered by interpreters like Louis Couturat, Clarence I. Lewis, Karl Dürr, William and Martha Kneale, and states that till now Leibniz’s results in the field of logic have been widely underestimated. The book contains a careful and detailed examination of almost all Leibniz’s papers on the logical calculus and it is based on the knowledge of a wide range of texts unknown to previous interpreters. Lenzen’s acquaintance with the entire corpus of Leibniz’s logical texts is impressive. Some chapters of the book in particular contain very solid and useful logical analyses. Chapter 7, for instance, includes the most profound account of Leibniz’s theory of negation I ever read. Chapter 8 presents in a very clear way Leibniz’s attempt to reduce traditional syllogistic to a calculus based on logical inclusion between terms. Chapter 14 is devoted to Leibniz’s a priori proof of the existence of God and presents the first edition of an important manuscript on the proof. On chapters 3 and 5 a series of convincing reasons are given to argue that Leibniz’s concept of ens does not have to be considered a constant in the logical calculus. In brief: this work discusses a wide range of topics in such a clear and learned way that it will surely become a reference book for scholars interested in the study of Leibniz’s logical papers in the forthcoming years. (shrink)