An important task for every major philosopher is to offer us an understanding of the nature of mind. The essays in this volume discuss different aspects of the philosophical theories of mind put forward in the century and a half that followed Descartes' Meditations of 1641. These years, often referred to as the 'early-modern' period, are probably unparalleled for originality and diversity in conceiving the mind. The volume not only includes two essays on Descartes' own thinking, but there are also (...) examinations of what Spinoza, Malebranche, Locke, Berkeley, Reid, the Cambridge Platonists, and others, have to say about the nature of mind. The aim of the volume is to represent some of the best contemporary research and reflection on mind in early-modern philosophy. The contributors, who teach at a range of universities in mainland Europe, Great Britain and North America, are Margaret Atherton, Miran BozoviÄ, Petr GlombìÄek, Boris Hennig, James Hill, Nicholas Jolley, Jan Palkoska, G. A. J. Rogers, and Anthony Savile. All the essays appear here for the first time. (shrink)

[Anthony Kenny: Thomas on the Human Spirit].

The article treats the issue of a private language as presented by Ludwig Wittgenstein in his whole work and it interprets the problem of private language as a critique of a concept of language as a calculus contrasting it with a conception of language as universal medium. According to this understanding the private language is not only a language of sense data, not even necessarily a language based purely in a subjectivity of its speaker. The article aims to show the (...) continuity of Wittgenstein’s thought on the matter. In the end it briefly touches the question of so called solitary language as a once so popular version of the problem in the framework presented above. (shrink)

It is argued that George Berkeley’s term ‘common sense’ does not indicate shared conviction, but the shared capacity of reasonable judgement, and is therefore to be classed as a mental ability, not a belief-system. Common sense is to be distinguished from theoretical understanding which, in Berkeley’s view, is frequently corrupted either by learned prejudice, or by language that lacks meaning or camouflages contradiction. It is also to be distinguished from the deliverances of divine revelation, which—however enlightening Berkeley supposed them to (...) be—are not necessarily available to all people. This interpretation of common sense is supported both by attention to Berkeley’s own texts, including his sermons, letters and philosophical writings, and by attention to the views of John Locke and René Descartes, who also understand ‘common sense’ as susceptibility to the ‘natural light’. In addition, this interpretation renders Berkeley’s appeal to common sense in support of his immaterialism a straightforward appeal to the reader’s native reason. No longer, then, are we forced to see Berkeley as improbably maintaining that the denial of matter is really the view of ‘the common people’, but rather that those who have least attachment to theory and doctrine will be best able to grasp the case for immaterialism. (shrink)

The article concerns Descartes‘ comment on an anonymous project of universal language. Author argues that Descartes‘ refusal of the project is based on implicit argument against very posssibility of the project. Descartes‘ comment can then be read as a dismissal of quite popular version of entlightenment reform, usually attributed even to Descartes himself, but according to the interpretation proposed here the argument is directed against a recipient of Descartes‘ comment, namely Marin Mersenne.

[On Hintikka’s Alternative Interpretation of “Cogito, ergo sum”.].

Článek se věnuje nejnovější knize Charlese Taylora Secular Age (2007). Poukazuje na její kořeny v hegeliánství a v novějších kritikách modernity a probírá některé námitky vůči Taylorově koncepci včetně Taylorových odpovědí. Taylor představuje dva typy současných etických projektů. Na jedné straně tzv. výlučný humanismus, na druhé straně imanentní antihumanismus. A smyslem jeho genealogie moderního sekularismu je ukázat vzájemnou podmíněnost mezi antihumanismem, humanismem a religiozitou s tím, že bez nějaké formy transcendence se každý západní hodnotový systém vystavuje nepřekonatelným tenzím, aby následně (...) navrhl koncept originality volající k následování jako spojnici hlavního nároku křesťanství ztělesněného v pojmu lásky k bližnímu s moderním uměním jako náhražkovým náboženstvím. Taylorova práce je nejen v tomto ohledu postavena na jeho celoživotním zájmu o Hegelovu filosofii, v níž se hledá takový způsob, jak spojit etiku autenticity se smyslem pro společenství, který by překonal omezení reflektující racionality. Taylorovo obohacení Hegela můžeme chápat jako snahu nahradit tradiční nárok lásky k bližnímu srozumitelnějším pojmem podpory rozmanitosti v jednotě (resp. pojmem kultury). The essay examines Charles Taylor’s latest book The Secular Age (2007) by unveiling its Hegelian roots together with its debt to other critics of modernity and by considering some objections as well as Taylor’s answers. Taylor sketches two types of contemporary ethical projects. On the one hand he considers exclusive humanism, on the other the immanent antihumanism. The moral of Taylor’s story of modern secularism comes to his claim that the anti-humanism is enabled by humanism and humanism again by religiosity. According to him this comes to indispensability of religion: namely, some notion of transcendence is necessary for coherence of any set of values available to western man. Actually the originality inspiring its following is what he understands as the key element that is shared by the central claim of Christianity embodied in the notion of love (agape) overcoming the rigorism of explicit rules on the one hand and modern art as Ersatzreligion.(Not only) this aspect of Taylor’s recent work is rooted in his lifelong interest in Hegel, who looked for such pairing of the ethics of authenticity with a sense for community that could overcome the limits of reflective rationality. We can interpret Taylor’s amendement to Hegel as a substitution of „support for differentiation in unity“ (or simply „culture“) for „love for neighbour“. (shrink)

[On the role of the first principle in Descartes' philosophy].

[Locke’s modest proposal of a doctrine of signs].

[General sense in Arendt and Kant’s common sense].

[A note on Jan Kuneš's and Jiří Pechar's discussion. on translation ].

The aim of this paper is to find roots of the private language argument in older Wittgenstein‘s texts. Scrutiny of them reveals that the more general form of the argument, so called solitary language argument, precedes the traditional sense-data argument from the first Wittgenstein‘s consideration of the problem in The Brown Book with a continuation in lectures on sense data and private experience. In consequence, this undermines exegetical objections to the solitary language argument.

The paper addresses a mainstream contemporary view of the notion of common sense in Thomas Reid’s philosophy, as proposed by Nicholas Wolterstorff who claims that Reid was not clear about the concept of common sense, or about the principles of common sense. In contrast, this paper presents Reid’s conception as a clear and traditional Aristotelian notion of common sense and its principles as presuppositions of particular sense judgments, usually taken for granted. The alleged confusion about principles is resolved by a (...) distinction between principles of common sense and first principles as such. (shrink)

Current thinking suggests that dissociation could be a significant comorbid diagnosis in a proportion of schizophrenic patients with a history of trauma. This potentially may explain the term “schizophrenia” in its original definition by Bleuler, as influenced by his clinical experience and personal view. Additionally, recent findings suggest a partial overlap between dissociative symptoms and the positive symptoms of schizophrenia, which could be explained by inhibitory deficits. In this context, the process of dissociation could serve as an important conceptual framework (...) for understanding schizophrenia, which is supported by current neuroimaging studies and research of corollary discharges. These data indicate that the original conception of “split mind” may be relevant in an updated context. Finally, recent data suggest that the phenomenal aspects of dissociation and conscious disintegration could be related to underlying disruptions of connectivity patterns and neural integration. (shrink)

Uniform infinite bases are defined for the single-conclusion and multiple-conclusion admissible rules of the implication–negation fragments of intuitionistic logic and its consistent axiomatic extensions . A Kripke semantics characterization is given for the structurally complete implication–negation fragments of intermediate logics, and it is shown that the admissible rules of this fragment of form a PSPACE-complete set and have no finite basis.

This paper is a contribution to Mathematical fuzzy logic, in particular to the algebraic study of t-norm based fuzzy logics. In the general framework of propositional core and Δ-core fuzzy logics we consider three properties of completeness with respect to any semantics of linearly ordered algebras. Useful algebraic characterizations of these completeness properties are obtained and their relations are studied. Moreover, we concentrate on five kinds of distinguished semantics for these logics–namely the class of algebras defined over the real unit (...) interval, the rational unit interval, the hyperreals , the strict hyperreals and finite chains, respectively–and we survey the known completeness methods and results for prominent logics. We also obtain new interesting relations between the real, rational and hyperreal semantics, and good characterizations for the completeness with respect to the semantics of finite chains. Finally, all completeness properties and distinguished semantics are also considered for the first-order versions of the logics where a number of new results are proved. (shrink)

This monograph presents a general theory of weakly implicative logics, a family covering a vast number of non-classical logics studied in the literature, concentrating mainly on the abstract study of the relationship between logics and their algebraic semantics. It can also serve as an introduction to algebraic logic, both propositional and first-order, with special attention paid to the role of implication, lattice and residuated connectives, and generalized disjunctions. Based on their recent work, the authors develop a powerful uniform framework for (...) the study of non-classical logics. In a self-contained and didactic style, starting from very elementary notions, they build a general theory with a substantial number of abstract results. The theory is then applied to obtain numerous results for prominent families of logics and their algebraic counterparts, in particular for superintuitionistic, modal, substructural, fuzzy, and relevant logics. The book may be of interest to a wide audience, especially students and scholars in the fields of mathematics, philosophy, computer science, or related areas, looking for an introduction to a general theory of non-classical logics and their algebraic semantics. (shrink)

We prove that Standardization fails in every nontrivial universe definable in the nonstandard set theory BST, and that a natural characterization of the standard universe is both consistent with and independent of BST. As a consequence we obtain a formulation of nonstandard class theory in the ∈-language.

Substructural logics extending the full Lambek calculus FL have largely benefited from a systematical algebraic approach based on the study of their algebraic counterparts: residuated lattices. Recently, a nonassociative generalization of FL has been studied by Galatos and Ono as the logic of lattice-ordered residuated unital groupoids. This paper is based on an alternative Hilbert-style presentation for SL which is almost MP -based. This presentation is then used to obtain, in a uniform way applicable to most substructural logics, a form (...) of local deduction theorem, description of filter generation, and proper forms of generalized disjunctions. A special stress is put on semilinear substructural logics. Axiomatizations of the weakest semilinear logic over SL and other prominent substructural logics are provided and their completeness with respect to chains defined over the real unit interval is proved. (shrink)

This paper is a contribution to the study of the rôle of disjunction inAlgebraic Logic. Several kinds of (generalized) disjunctions, usually defined using a suitable variant of the proof by cases property, were introduced and extensively studied in the literature mainly in the context of finitary logics. The goals of this paper are to extend these results to all logics, to systematize the multitude of notions of disjunction (both those already considered in the literature and those introduced in this paper), (...) and to show several interesting applications allowed by the presence of a suitable disjunction in a given logic. (shrink)

Dave Ripley has recently argued against the plausibility of multiset consequence relations and of contraction-free approaches to paradox. For Ripley, who endorses a nontransitive theory, the best arguments that buttress transitivity also push for contraction—whence it is wiser for the substructural logician to go nontransitive from the start. One of Ripley’s allegations is especially insidious, since it assumes the form of a trivialisation result: it is shown that if a multiset consequence relation can be associated to a closure operator in (...) the expected way, then it necessarily contracts. We counter Ripley’s objection by presenting an approach to multiset consequence that escapes this trap. This approach is multiple-conclusioned in a heterodox way, for multiple succedents are given a conjunctive, rather than a disjunctive reading. Finally, we address a further objection by French and Ripley to the effect that the informational interpretation of sequents in linear logic does not motivate cut. (shrink)

Formal systems of fuzzy logic are well-established logical systems and respected members of the broad family of the so-called substructural logics closely related to the famous logic BCK. The study of fragments of logical systems is an important issue of research in any class of non-classical logics. Here we study the fragments of nine prominent fuzzy logics to all sublanguages containing implication. However, the results achieved in the paper for those nine logics are usually corollaries of theorems with much wider (...) scope of applicability. In particular, we show how many of these fragments are really distinct and we find axiomatic systems for most of them. In fact, we construct strongly separable axiomatic systems for eight of our nine logics. We also fully answer the question for which of the studied fragments the corresponding class of algebras forms a variety. Finally, we solve the problem how to axiomatize predicate versions of logics without the lattice disjunction. (shrink)

Transfer theorems are central results in abstract algebraic logic that allow to generalize properties of the lattice of theories of a logic to any algebraic model and its lattice of filters. Their proofs sometimes require the existence of a natural extension of the logic to a bigger set of variables. Constructions of such extensions have been proposed in particular settings in the literature. In this paper we show that these constructions need not always work and propose a wider setting in (...) which they can still be used. (shrink)

Structural completeness properties are investigated for a range of popular t-norm based fuzzy logics—including Łukasiewicz Logic, Gödel Logic, Product Logic, and Hájek's Basic Logic—and their fragments. General methods are defined and used to establish these properties or exhibit their failure, solving a number of open problems.

The paper is devoted to Nikolay Lossky who was one of the leading Russian philosophers of the first half of the twentieth century. We demonstrate the interrelationship between three aspects of Lossky’s philosophy: realism in the theory of knowledge, hierarchical personalism, and supra-naturalistic concept of evolution. We pay attention to the contemporary relevance of Lossky, and we discuss and critique his ideas in light of those of other philosophers. Lossky acknowledges that the subject interacts with being itself and that knowledge (...) is not a shadow or copy of being. His ontology is based on intuitivism and epistemological optimism. Its main categories are God, as the super-systematic principle, and monads. In Lossky’s metaphysics, the idea of abstract ideal principles of being is quite harmoniously combined with personalism. Lossky’s ontology has strong ethical underpinnings. He considers that values are rooted in being and that the evolution of the world is directed by God towards the good. Lossky elaborates a supra-naturalistic concept of evolution. He extrapolates principles of teleological determination, which are fundamental to human existence, on the underlying levels of the world as a whole. Many trends of modern thought are in tune with Lossky’s philosophy, including a return to metaphysics, panpsychism, Platonism, and the desire to unite the religious worldview with new scientific discoveries. (shrink)

Chaadayev's Philosophical Letters and Apology of a Madman unite the religious approach to history, which was later adopted by the Slavophiles, with the search for Western enlightenment, symbolized in the figure of Peter the Great. - Front flap.