N. R. Hanson has argued that abductive reasoning relates strongly on the conceptual aspect of problem solving. In different kinds of intellectual enterprizes involving creation of new knowledge, language has an essential role. This conceptual aspect is here approached from a perspective of theory of linguistic meaning. The approach from theory of meaning intends to provide theoretical presuppositions for meaningful expressions and, thus, thoughts. It is argued that these presuppositions characterize the content of abductive reasoning. Language is essential for expressing (...) and communicating knowledge, but it also plays role in how meaningful thoughts about the world are constructed. It is argued here that the propositional content of thoughts is related to language through logical and grammatical forms of language. If abductive reasoning is seen as reasoning bound by certain presuppositions , and the possible number of conclusions of reasoning is limited, these linguistic structures characterize the.rst criterion for possible meaningful hypothesis suggestions. The theory of meaning, especially provided by Jerrold Katz, has also another useful theoretical device for understanding abduction, in addition to the compositional sentence meaning described above. Especially in pragmatism the meanings of linguistic expressions are seen to be dependent of the context they are used. These contextual tokens of meanings provide contextual information of the possible uses and meanings of a linguistic expression. These two theoretical conceptions from the theory of meaning can provide more thorough understanding of the contents of abductive reasoning. (shrink)

The problem of truthmakers for negative propositions was introduced by Bertrand Russell in 1918. Since then the debate has mostly been concerned with whether to accept or reject their existence, and little has been said about what it is that makes a negative proposition negative. This is a problem as it is obvious that you cannot just read it off from the grammar of a sentence. The aim of this paper is to demonstrate that propositions may be negative or positive (...) in many ways: it offers a typology, and shows how the question of the existence of negative facts will receive a different answer depending on its relationship to that typology. (shrink)

Les trois conférences qui suivent continuent l’exploration et l’évaluation des rapports complexes entre les descriptions de l’esprit et du langage données par Wittgenstein et celles données par ses prédécesseurs austro-allemands, les héritiers de Brentano et de Bolzano. La première considère le rapport entre quelques distinctions et thèses qui se trouvent dans le Tractatus et quelques distinctions et thèses similaires esquissées auparavant par le phénoménologue réaliste Max Scheler. La deuxième conférence est consacrée à l’examen des descriptions des émotions, du vouloir dire, (...) du vouloir, du vouloir faire et du souvenir données par Wittgenstein et par les premiers phénoménologues — des descriptions dont les sources sont explicitées dans la première conférence. Enfin, dans la troisième conférence, la description du langage et la philosophie de la signification dans la philosophie austro-allemande sont analysées.The three lectures which follow continue the exploration and evaluation of the complex relations between the descriptions of language and the mind given by Wittgenstein and those given by his Austro-German predecessors, the heirs of Bolzano and Brentano. The first lecture considers the relation between some distinctions and theses to be found in the Tractatus and similar distinctions and theses set out earlier by the realist phenomenologist Max Scheler. The second lecture is devoted to an examination of the descriptions of emotions, meaning something, willing, intending and remembering given by Wittgenstein and the first phenomenologists ; the descriptions discussed in this lecture build on ideas set out in the first lecture. The third and last lecture analyses the description of language and the philosophy of meaning in Austro-German philosophy. (shrink)

I shall show that the main argument forms of Wittgenstein's Tractatus and Kant's Critique of Pure Reason are Modus Tollens. I shall then argue that the main arguments of both books beg the question by addressing only one sub-argument in each, although it is still in controversy whether begging the question is a genuine fallacy.

It has been much debated whether Tractarian objects are what Russell would have called particulars or whether they include also properties and relations. This paper claims that the debate is misguided: there is no logical category such that Wittgenstein intended the reader of the Tractatus to understand his objects either as providing examples of or as not providing examples of that category. This is not to say that Wittgenstein set himself against the very idea of a logical category: quite the (...) contrary. However, where Russell presents his logical variety of particulars and the various types of universal, and Frege presents his of objects and the various types of function, Wittgenstein denies the propriety of such a priori expositions. Wittgenstein envisages a variety of logical types of entity but insists that the nature of these types is something to be discovered only through analysis. (shrink)

Ce numéro thématique de la revue Philosophiques est consacré aux Conférences Hugues Leblanc qui ont eu lieu du 1er au 3 avril 2010 au Département de philosophie de l'Université du Québec à Montréal. À cette occasion, le conférencier invité était Kevin Mulligan, titulaire de la chaire de philosophie analytique au Département de philosophie de l'Université de Genève, qui a prononcé trois conférences sous le titre " Wittgenstein vs ses prédécesseurs austro-allemands ", publiées dans ce numéro. Mulligan y développe un de (...) ses thèmes historiques de prédilection, à savoir la dette de Wittgenstein, dans ses travaux sur l'esprit et le langage, à l'endroit de ses prédécesseurs austro-allemands. Comme le veut la formule des conférences Hugues Leblanc, nous avons réuni quelques collègues afin de discuter de quelques-uns des aspects des travaux du conférencier invité et nous avons ajouté, pour compléter ce numéro de Philosophiques, quelques articles originaux portant également sur d'autres aspects des travaux de Mulligan. On peut regrouper l'ensemble de ces contributions sous quatre des grands thèmes exploités par Mulligan en philosophie : le domaine de l'ontologie (incluant les relations, les tropes, les états de choses et les vérifacteurs), le domaine de la philosophie de l'esprit, celui des émotions et des valeurs, et enfin le thème historique de la philosophie austro-allemande, de Bolzano à Wittgenstein en passant par M. Scheler et la phénoménologie de Munich. Faute de pouvoir rendre compte dans cette préface de l'ensemble de ces riches contributions à ce numéro de Philosophiques, je me contenterai de renvoyer le lecteur aux résumés, préparés par les auteurs de ces contributions, qui précèdent chacun des articles. (shrink)

Although we recognize the value of ethical interpretations of the Tractatus Logico-philosophicus, we also believe that many of them overvalue the place and value of ethics in the book. This paper analyzes these interpretations, in order to show their merits and their faults and develop what we call “complementarity between logic and ethics”. Only with the interaction of logic and ethics, considered transcendental by Wittgenstein, will we be able to read the Tractatus as a non-contradictory whole.

Resumo: Este trabalho busca fazer algumas especulações a respeito de uma das idéias mais controversas presentes na primeira obra de Wittgenstein, a saber, o místico. Tentaremos elucidar este conceito, comparando-o com o misticismo religioso caracterizado por William James em As Variedades da experiência religiosa. Tal comparaçáo se faz necessário, a nosso ver, para que se possa esclarecer algumas peculiaridades do místico tractatiano, desenvolvendo assim, uma percepçáo mais acurada da importância deste conceito dentro do Tractatus. A nosso ver, ele náo é (...) um tema gratuito em tal obra, ao contrário, é decorrência lógica do encontro do sujeito volitivo com os limites da linguagem, apresentados através da análise lógica da proposiçáo. Tentaremos, assim, neste trabalho, elucidar como o místico do Tractatus se assemelha e difere do misticismo religioso. Palavras-chave: James; Místico; Tractatus ; Wittgenstein. (shrink)