Franz Brentano was a leading philosopher and psychologist of the nineteenth century. Indeed, the impact of his scholarship was so great that he became synonymous with a school of thought and a new approach in scientific philosophy. The Brentano School stood against the Idealistic and post-Kantian German tradition and Brentano played a crucial role in the founding of Austrian philosophy. He had an enormous impact on the work of Husserl and Heidegger, as well as on Moore’s _Ethics_ and Stout (...) and Russell’s analysis of mind. In particular, situated between the phenomenology movement and the analytic tradition, the concept of intentionality was redefined by Brentano and has been—and remains—a key concept of twentieth- and twentieth-first century philosophy of mind. But Brentano not only reshaped philosophy of mind; he was also a remarkable and innovative thinker in several other fields of philosophy, and recent debate in metaethics, metaphysics, and the history of analytic philosophy shows a strong resurgence of interest in Brentano’s thought. Published to coincide with the centenary of Brentano’s death, this four-volume collection, a new title from Routledge Major Works, provides an essential intellectual tool for the exegetical evaluation of all aspects of Brentano’s work. Bringing together early reviews and reactions from his contemporaries—many of which have never before been translated into English—as well as the best critical assessments of Brentano’s work, this ‘mini library’ provides Brentano scholars, historians of philosophy and psychology, and phenomenologists, with a rigorous historical appraisal of Brentano’s thought and influence. Brentano’s relationships with Husserl, Heidegger, and the phenomenological tradition are examined in depth, alongside investigations of key themes from his work on Aristotle, medieval and modern philosophy, philosophy of mind, logic, ontology, ethics, aesthetics, philosophy of religion, and the philosophy of history. (shrink)

The paper argues against the growing tendency to interpret Brentano’s conception of inner consciousness in self-representational terms. This trend has received support from the tendency to see Brentano as a forerunner of contemporary same-order theories of consciousness and from the view that Brentano models intransitive consciousness on transitive consciousness, such that a mental state is conscious insofar as it is aware of itself as an object. However, this reading fails to take into account the Brentanian concept of object, which is (...) ultimately derived from ancient and medieval philosophy, as well as the secondary, elusive character that Brentano attributes to inner perception. According to Brentano, we have an aspectual but transparent consciousness of transcendent objects, whereas our awareness of our own mental acts is always complete but incidental, and ultimately opaque. Reversing the relationship between intentionality and consciousness faces difficulties at the textual interpretative level, but also raises theoretical problems, for it risks treating Brentano’s theory of mind as a form of subjectivism and idealism. (shrink)

In line with earlier works, this article argues for a “continuist” interpretation of Brentano’s conception of intentionality. It maintains that Brentano’s conception of intentionality rests on a complex set of notions, which are reduced to a minimal core or applied more fully depending on the complexity of the mental phenomenon under consideration and perspective from which it is analyzed. The article positions this conceptual structure in relation to theories of objects developed within the framework of late- and Neo-Scholastic philosophy where, (...) since the psychic act can relate to its object in different ways, the different types and roles of objects must be distinguished. This theory of objects enables Brentano to reinterpret Aristoteles’s idea of the intentionality of mental phenomena in light of the commentaries and interpretations of Thomas Aquinas while also giving space to other medieval texts. (shrink)

Ausgehend von Franz Brentanos berühmter Intentionalitätspassage aus der Psychologie vom empirischen Standpunkt wird dargelegt, daß die vorherrschende ontologische Deutung seines sogenannten frühen Intentionalitätsgedankens unhaltbar ist. Unter Berücksichtigung von Brentanos Quellen, vor allem Aristoteles' Wahmehmungslehre und Theorie der Relativa, wird die Auffassung des sogenannten intentionalen bzw. immanenten Objektes als bewußtseinsimmanenter Entität abgelehnt und die Kontinuität hervorgehoben, die zwischen Brentanos früher und späterer, sogenannter reistischer Intentionalitätsauffassung besteht.

La thèse de l’« inexistence intentionnelle » formulée par Brentano a été traditionnellement interprétée comme une théorie de la « relation intentionnelle », autrement dit de la relation entre l’acte mental et son « objet immanent » ou « intentionnel », c’est-à-dire interne à la conscience. Se fondant sur la lecture du fameux passage sur l’intentionnalité de la Psychologie du point de vue empirique , le présent article démontre que l’interprétation ontologique de la théorie de l’intentionnalité du premier Brentano est (...) insoutenable, toute dominante qu’elle est. Pour ce faire, nous partirons des sources de la pensée de Brentano, en particulier de la théorie de la perception et des relatifs d’Aristote, pour rejeter la conception de l’objet immanent ou intentionnel comme entité immanente à la conscience et mettre en évidence la continuité qui existe entre la première conception de Brentano de l’intentionnalité et la seconde, consécutive à ce qu’on définit comme le tournant réiste de sa pensée.Brentano’s thesis of “intentional inexistence” has been traditionally interpreted as a theory of “intentional relationships”, i.e., of the relation between a mental act and its “immanent” or “intentional object”, within consciousness. Starting from the famous passage on intentionality in Psychology from an Empirical Standpoint , the present paper shows that the dominant ontological interpretation of Brentano’s former theory of intentionality is untenable. Proceeding from the sources of Brentano’s thought, in particular from Aristotle’s theory of perception and of relatives, the conception of the immanent or intentional object as an immanent entity to consciousness is rejected. Instead, the continuity between Brentano’s former conception of intentionality and the subsequent one, following the so-called reistic turning-point in his thought, is highlighted. (shrink)

_The Philosophy of Brentano_ has as its goal to explore the significance and impact of Franz Brentano’s thought, to promote a deepening of the ongoing renaissance of interest in Brentano, and to advance the project of understanding Brentano’s actual philosophical positions and correcting entrenched misunderstandings.

This article, inspired by Rudolf Haller’s thesis of an independent, specific, and unitary Austrian tradition of scientific philosophy, develops the idea of a specific Austrian tradition of psychological research, as distinguished in its development from that in Germany. This tradition was shaped by two phenomenological trends, which were merged into unity in Prague by Carl Stumpf and Brentano’s students of the second generation. One trend traces back to Goethe and was continued in Prague by the physiologists Jan E. Purkinje and (...) Ewald Hering, culminating in the work of Ernst Mach. The other trend was initiated by Franz Brentano and spread through his school. Stumpf was the key integrator of these two traditions, which he then partially passed on to his Berlin students and founders of Gestalt psychology. Finally, Karl Bühler’s “reimport” of the Brentanian psychological legacy into the Vienna of the First Republic is briefly illustrated. (shrink)

This volume, originating from the centennial Second International Conference Graz 1977-2017 on Franz Brentano's philosophy, collects eighteen essays written by nineteen distinguished specialists covering the main areas of Brentano's philosophy: his epistemology, ontology, ethics, and logic, and his contributions to psychology and philosophy of mind. Its goal is to explore the significance and impact of Brentano's thought, to promote a deepening of the ongoing renaissance of interest in Brentano, and to advance the project of understanding Brentano's actual philosophical positions (...) and correcting entrenched misunderstandings. (shrink)

In this paper we show that the Gupta-Belnap systems S# and S* are П12. Since Kremer has independently established that they are П12-hard, this completely settles the problem of their complexity. The above-mentioned upper bound is established through a reduction to countable revision sequences that is inspired by, and makes use of a construction of McGee.

This paper is concerned with the way different axiom systems for set theory can be justified by appeal to such intuitions as limitation of size, predicativity, stratification, etc. While none of the different conceptions historically resulting from the impetus to provide a solution to the paradoxes turns out to rest on an intuition providing an unshakeable foundation,'each supplies a picture of the set-theoretic universe that is both useful and internally well motivated. The same is true of more recently proposed axiom (...) systems for non-well-founded universes, and an attempt is made to motivate such axiom systems on the basis of an old and respected ‘algebraic’ intuition. (shrink)

In the Posterior Analytics, Aristotle takes up the position of those who hold that all knowledge is demonstrable, and, hence, scientific. Such people are said to base their arguments on the fact that some demonstrations are circular or reciprocal (72b251). As Aristotle makes clear in the text, a circular demonstration consists of an argument (form) in which the conclusion is equivalent to one of the premises. But as Aristotle hastens to point out, demonstrations cannot be circular, for the essence of (...) demonstration is to proceed from what is prior to what is posterior, and the same things cannot be both prior and posterior. A circular demonstration has the form ‘if A is, then B must be;’ and ‘if B is, then A must be’: “consequently, the upholders of circular demonstration are in the position of saying that if A is, A must be—a simple way of proving anything” (73a5). (shrink)

Der Triestiner Vittorio Benussi (1878-1927), Mitglied der Grazer gegenstandstheoretischen und psychologischen Schule um Alexius Meinong, war einer der bedeutendsten Experimentalpsychologen seiner Zeit. Seine Pionierleistungen auf dem Gebiet der experimentellen Gestaltpsychologie gerieten jedoch bald durch die fortschreitende Durchsetzung der Berliner Schule der Gestalttheorie in Vergessenheit, so daß sein Werk bis heute weitgehend unbekannt geblieben ist. Benussis wissenschaftliche Tätigkeit, die sich durch eine streng experimentelle Vorgangsweise auszeichnet, erweist sich rückblickend als fruchtbarer Anknüpfungspunkt für die zeitgenössische Kognitionswissenschaft. Dies ermöglicht eine Neubewertung seiner wissenschaftlichen (...) Arbeit und jener aktpsychologischen Tradition, der er angehörte. Benussis Untersuchungen nehmen ihren Ausgangspunkt in der Voraussetzung der Intentionalität des Psychischen. Seine Arbeiten thematisieren das Problem des subjektiven Eingriffs in die Konstitution der Erfahrungsgegebenheiten, indem sie die Vorherrschaft des Subjektes über die elementaren Sinnesbedingungen betonen. In Benussis Gesamtwerk läßt sich ein einheitliches Programm erkennen: Ausgehend von der Gegenstands- und Produktionstheorie der Grazer Schule, entwickelt Benussi seinen eigenen theoretischen Standpunkt, der ihn - bewußt - der Phänomenologie Husserls nähebringt. Benussi verlagert schrittweise den Schwerpunkt seiner Forschungen von der gegenstandstheoretischen Perspektive zur Hervorhebung der latenten Subjektivität, die im Konstitutionsprozeß des Gegebenen wirksam ist. Leben und Werk Vittorio Benussis rückblickend zu betrachten, heißt sich mit einem Klassiker der Psychologie zu beschäftigen, dessen Modernität erst in der heutigen Zeit erkannt werden kann. (shrink)

I present a formal theory of the logic and aboutness of imagination. Aboutness is understood as the relation between meaningful items and what they concern, as per Yablo and Fine’s works on the notion. Imagination is understood as per Chalmers’ positive conceivability: the intentional state of a subject who conceives that p by imagining a situation—a configuration of objects and properties—verifying p. So far aboutness theory has been developed mainly for linguistic representation, but it is natural to extend it to (...) intentional states. The proposed framework combines a modal semantics with a mereology of contents: imagination operators are understood as variably strict quantifiers over worlds with a content-preservation constraint. (shrink)

We give a review and critique of jury theorems from a social-epistemology perspective, covering Condorcet’s (1785) classic theorem and several later refinements and departures. We assess the plausibility of the conclusions and premises featuring in jury theorems and evaluate the potential of such theorems to serve as formal arguments for the ‘wisdom of crowds’. In particular, we argue (i) that there is a fundamental tension between voters’ independence and voters’ competence, hence between the two premises of most jury theorems; (ii) (...) that the (asymptotic) conclusion that ‘huge groups are infallible’, reached by many jury theorems, is an artifact of unjustified premises; and (iii) that the (nonasymptotic) conclusion that ‘larger groups are more reliable’, also reached by many jury theorems, is not an artifact and should be regarded as the more adequate formal rendition of the ‘wisdom of crowds’. (shrink)

El concepto de "inmanencia" ha adquirido una creciente relevancia en el campo filosófico contemporáneo. Dos destacados pensadores franceses, Gilles Deleuze y Franfois Jullien, le han otorgado un lugar fundamental en sus investigaciones. El propósito de este artículo es indagar el diálogo, poco explorado aún, entre ambos autores. Nuestra hipótesis de trabajo propone los siguientes ejes de análisis: primero, comparamos los usos de la expresión "absolutización de la inmanencia", acuñada por el sinólogo a fin de relativizar la trascendencia en el pensamiento (...) chino y luego empleada por Deleuze en el marco de la creencia en este mundo. En segundo lugar, examinamos las críticas que Jullien le dirige a Deleuze respecto a la relación entre la filosofía y la sabiduría. En tercer lugar, confrontamos sus perspectivas divergentes sobre la inmanencia en tanto "plano" (Deleuze) y como "fondo" (Jullien). Finalmente, ponemos de manifiesto la dificultad presente en ambos autores para pensar la idea de inmanencia. The concept of "immanence" has acquired substantial relevance within the contemporary philosophical field. Two influential french thinkers, Gilles Deleuze and Franfois Jullien, have conferred this concept a fundamental standing in their research. The purpose of this work is to explore the dialogue between both authors as this exploration has not been concluded. Our hypothesis puts forward the following axes of analysis. First, we shall compare the usage of the expression "absolutization of immanence" coined by the sinologist in order to put in perspective the idea of transcendence in Chinese thought. This expression was then applied by Deleuze within the frame of the belief in this world. Second, we shall examine Jullien's critique of Deleuze concerning the relationship between Philosophy and Wisdom. Third, we shall confront the divergent perspectives on immanence: as "plane" (Deleuze) and as "buttom" (Jullien). Finally, we shall show the difficulty to ponder the idea of immanence in both authors. (shrink)

Unification was originally introduced in automated deduction and term rewriting, but has recently also found applications in other fields. In this article, we give a survey of the results on unification obtained in two closely related, yet different, application areas of unification: description logics and modal logics.

In this paper, we explore Fregean metatheory, what Frege called the New Science. The New Science arises in the context of Frege’s debate with Hilbert over independence proofs in geometry and we begin by considering their dispute. We propose that Frege’s critique rests on his view that language is a set of propositions, each immutably equipped with a truth value (as determined by the thought it expresses), so to Frege it was inconceivable that axioms could even be considered to be (...) other than true. Because of his adherence to this view, Frege was precluded from the sort of metatheoretical considerations that were available to Hilbert; but from this, we shall argue, it does not follow that Frege was blocked from metatheory in toto. Indeed, Frege suggests in Die Grundlagen der Geometrie a metatheoretical method for establishing independence proofs in the context of the New Science. Frege had reservations about the method, however, primarily because of the apparent need to stipulate the logical terms, those terms that must be held invariant to obtain such proofs. We argue that Frege’s skepticism on this score is not warranted, by showing that within the New Science a characterization of logical truth and logical constant can be obtained by a suitable adaptation of the permutation argument Frege employs in indicating how to prove independence. This establishes a foundation for Frege’s metatheoretical method of which he himself was unsure, and allows us to obtain a clearer understanding of Frege’s conception of logic, especially in relation to contemporary conceptions. (shrink)

Democratic decision-making is often defended on grounds of the ‘wisdom of crowds’: decisions are more likely to be correct if they are based on many independent opinions, so a typical argument in social epistemology. But what does it mean to have independent opinions? Opinions can be probabilistically dependent even if individuals form their opinion in causal isolation from each other. We distinguish four probabilistic notions of opinion independence. Which of them holds depends on how individuals are causally affected by environmental (...) factors such as commonly perceived evidence. In a general theorem, we identify causal conditions guaranteeing each kind of opinion independence. These results have implications for whether and how ‘wisdom of crowds’ arguments are possible, and how truth-conducive institutions can be designed. (shrink)

The logical status of abstraction principles, and especially Hume’s Principle, has been long debated, but the best currently availeble tool for explicating a notion’s logical character—permutation invariance—has not received a lot of attention in this debate. This paper aims to fill this gap. After characterizing abstraction principles as particular mappings from the subsets of a domain into that domain and exploring some of their properties, the paper introduces several distinct notions of permutation invariance for such principles, assessing the philosophical significance (...) of each. (shrink)

The Description Logic Handbook covers all aspects of the research in the field of knowledge representation. Written by some of the most prominent researchers in the field, and covering the basic technical material and implementational aspects, it is both a unique reference and a self-study guide.

Unlike the first English translation in 1974, this edition contains the text corresponding to Brentano's original 1874 edition.

This book covers the basic guidelines of Vittorio Benussi’s research during the period at Graz and at Padua. It does so in the light of a thorough study of his Nachlass. The book re-evaluates Benussi’s work as a historical piece, and shows how his work is still relevant today, especially in the areas of cognitive psychology and cognitive science. The volume deals with this original and ingenious - though largely ignored - scholar and discusses his work as a leading experimental (...) psychologist. Benussi’s contributions as discussed in this book were particularly relevant in the fields of visual and tactile perception, time perception, forensic psychology, hypnosis and suggestion, unconscious, and emotions. His classical papers are impressive in their originality, energy, range of approaches, experimental skill, the wealth of findings, and the quality of theoretical discussions. This book demonstrates that Benussi was ahead of his time and that his themes, experiments and research programmes are highly relevant to contemporary cognitive psychology. (shrink)

Frege's logicist program requires that arithmetic be reduced to logic. Such a program has recently been revamped by the "neologicist" approach of Hale and Wright. Less attention has been given to Frege's extensionalist program, according to which arithmetic is to be reconstructed in terms of a theory of extensions of concepts. This paper deals just with such a theory. We present a system of second-order logic augmented with a predicate representing the fact that an object x is the extension of (...) a concept C, together with extra-logical axioms governing such a predicate, and show that arithmetic can be obtained in such a framework. As a philosophical payoff, we investigate the status of the so-called Hume's Principle and its connections to the root of the contradiction in Frege's system. (shrink)

We propose a new account of indicative conditionals, giving acceptability and logical closure conditions for them. We start from Adams’ Thesis: the claim that the acceptability of a simple indicative equals the corresponding conditional probability. The Thesis is widely endorsed, but arguably false and refuted by empirical research. To fix it, we submit, we need a relevance constraint: we accept a simple conditional 'If φ, then ψ' to the extent that (i) the conditional probability p(ψ|φ) is high, provided that (ii) (...) φ is relevant for ψ. How (i) should work is well-understood. It is (ii) that holds the key to improve our understanding of conditionals. Our account has (i) a probabilistic component, using Popper functions; (ii) a relevance component, given via an algebraic structure of topics or subject matters. We present a probabilistic logic for simple indicatives, and argue that its (in)validities are both theoretically desirable and in line with empirical results on how people reason with conditionals. (shrink)

First published in 1969. Routledge is an imprint of Taylor & Francis, an informa company.

While second-order quantifiers have long been known to admit nonstandard, or interpretations, first-order quantifiers (when properly viewed as predicates of predicates) also allow a kind of interpretation that does not presuppose the full power-set of that interpretationgeneral” interpretations for (unary) first-order quantifiers in a general setting, emphasizing the effects of imposing various further constraints that the interpretation is to satisfy.

Tractatus 4.024 inspired the dominant semantics of our time: truth-conditional semantics. Such semantics is focused on possible worlds: the content of p is the set of worlds where p is true. It has become increasingly clear that such an account is, at best, defective: we need an ‘independent factor in meaning, constrained but not determined by truth-conditions’ (Yablo 2014, p. 2), because sentences can be differently true at the same possible worlds. I suggest a missing comment which, had it been (...) included in the Tractatus, would have helped semantics get this right from the start. This is my 4.0241: ‘Knowing what is the case if a sentence is true is knowing its ways of being true’: knowing a sentence’s truth possibilities and what we now call its topic, or subject matter. I show that the famous ‘fundamental thought’ that ‘the “logical constants” do not represent’ (4.0312) can be understood in terms of ways-based views of meaning. Such views also help with puzzling claims like 5.122: ‘If p follows from q, the sense of “p” is contained in the that of “q”’, which are compatible with a conception of entailment combining truth-preservation with the preservation of topicality, or of ways of being true. (shrink)