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- Steven E. Boër (2007). Thought-Contents: On the Ontology of Belief and the Semantics of Belief Attribution. Springer.This book provides a formal ontology of senses and the belief-relation that grounds the distinction between de dicto, de re, and de se beliefs as well as the opacity of belief reports. According to this ontology, the relata of the belief-relation are an agent and a special sort of object-dependent sense (a "thought-content"), the latter being an "abstract" property encoding various syntactic and semantic constraints on sentences of a language of thought. One bears the belief-relation to a thought-content T just in case one (is disposed as one who) inwardly affirms a certain sentence S of one’s language of thought that satisfies what T encodes, which in turn requires that S’s non-logical parts stand in appropriate semantical relations to items specified by T. Since these items may include other senses as well as ordinary objects, beliefs of arbitrary complexity are automatically accommodated. Within the framework of the formal ontology, a context-dependent compositional semantics is then provided for a fragment of regimented English capable of formulating ascriptions of belief—a semantics that treats substitutional opacity as a genuine semantic datum. Finally, the resulting picture of belief and its attribution is defended by showing how it solves standard puzzles, avoids objections to rival accounts, and satisfies certain adequacy conditions not fulfilled by traditional theories. Along the way, clarification and defense is offered for the ingredient conception of object-dependent senses, and it is shown how adoption of the language of thought hypothesis permits Bertrand Russell’s obscure doctrine of logical forms to be understood in a way that not only vindicates his Multiple Relation theory of de re belief but also reveals the connection between these logical forms and thought-contents.
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This thesis deals with the phenomenon of attitude reporting. More specifically, it provides a unified semantics of de re and de se belief reports. After arguing that de se belief is best thought of as a special case of de re belief, I examine whether we can extend this unification to the realm of belief reports. I show how, despite very promising first steps, previous attempts in this direction ultimately fail with respect to some relatively recent linguistic data involving quantified and infinitival reports, logophoric constructions, and monstrously shifted indexicals. Formalizing my idea of a contextual resolution of acquaintance relations in a dynamic framework, I arrive at an alternative analysis that handles all these data.
What role, if any, does formal logic play in characterizing epistemically rational belief? Traditionally, belief is seen in a binary way - either one believes a proposition, or one doesn't. Given this picture, it is attractive to impose certain deductive constraints on rational belief: that one's beliefs be logically consistent, and that one believe the logical consequences of one's beliefs. A less popular picture sees belief as a graded phenomenon.
Divided into two parts, the first concentrates on the logical properties of propositions, their relation to facts and sentences, and the parallel objects of commands and questions. The second part examines theories of intentionality and discusses the relationship between different theories of naming and different accounts of belief.
This paper discusses an "expressive constraint" on accounts of thought and language which requires that when a speaker expresses a belief by sincerely uttering a sentence, the utterance and the belief have the same content. It will be argued that this constraint should be viewed as expressing a conceptual connection between thought and language rather than a mere empirical generalization about the two. However, the most obvious accounts of the relation between thought and language compatible with the constraint (giving an independent account of one of either linguistic meaning or thought content and understanding the other in terms of it) both face serious difficulties. Because of this, the following will suggest an alternative picture of the relation between thought and language that remains compatible with the constraint.
When I talk about the objects of belief I do not mean, e.g., the sun to which my thought that the sun will rise tomorrow refers; I do not mean the objects we think about. I take objects rather in a general philosophical sense; they simply are the bearers of properties and the relata of relations. I am thus concerned with the objects that are related by the belief relation „_a_ believes that _p_“. In this scheme „ _a _“ represents a person or an epistemic subject; but I am not going to discuss what a person is. „ _p _“ or „that _p _“ represents an object, namely the object of belief; and I am going to discuss what this is. In other words, I am interested in belief contents – to use a less neutral, narrower and equally unclear term.
My aim is to motivate and develop a view of what senses are. Senses, as I conceive of them, avoid a number of the problems that plague a broadly Fregean approach to the semantics of belief ascriptions, as I hope to show. The chief innovation of my view that enables these solutions is that beliefs are taken to have multiple, truth-conditionally equivalent contents. In traditional Fregean terminology, a belief does not involve a relation to a single thought, but to many thoughts, some of which are very fine-grained, and some of which are rather coarse-grained. Each thought is a structured entity ultimately composed of unstructured senses that themselves vary in their level of grain. It is no part of my attempted vindication of senses that senses are closely related to the meanings of words, phrases, and sentences; this feature of historical Fregeanism I disavow. I endorse rather the equally traditional claim that senses are concepts or, if truth-evaluable, the propositional contents of belief.
This paper articulates a formal theory of belief incorporating three key theses: (1) belief is a dyadic relation between an agent and a property; (2) this property is not the belief's truth condition (i.e., the intuitively self-ascribed property which the agent must exemplify for the belief to be true) but is instead a certain abstract property (a thought-content) which contains a way of thinking of that truth condition; (3) for an agent a to have a belief about such-and-such items it is necessary that a possesses a language of thought, M a , and that a (is disposed as one who) inwardly affirms a sentence of M a in which there are terms that denote those objects.Employing an extended version of E. Zalta's system ILAO, the proffered theory locates thought-contents within a typed hierarchy of senses and their modes of presentation, the provisional definitions of which (suppressing complications added later to accommodate the contents of beliefs about beliefs) are as follows. A mode of presentation of e is a ternary relation of the sort [xyz z is a name in M y that denotes x, and D e yz] in which D e is an e-determiner – a relation between agents and their mental expressions imposing a syntactico-semantic condition sufficient for such an expression to denote e therein. A sense of an entity e is an abstract property that contains a mode of presentation R e of e by dint of encoding its property-reduct [x(y)(z)R e xyz]. In particular, a thought-content is a sense T of an ordinary first-order property P containing a mode of presentation whose P-determiner D P is such that, for any y and z, D P yz entails that z is a -abstract [ v S] of M y in which S is a sentence whose non-logical parts stand in appropriate semantic relations to the constituents of T's (some of which may themselves be senses).
Belief and its benefits -- Belief, reason, goodness -- Belief and the unknown -- Obstacles to belief -- Belief and meaning -- Learning to believe -- Believing and living.
Discussion of Steven E. Boër, Thought-Contents: On the Ontology of Belief and the Semantics of Belief Attribution
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