For Perry and many authors, de se thoughts are a species of de re thought. In this paper, I argue that de se thoughts come in two varieties: explicit and implicit. While explicit de se thoughts can be construed as a variety of de re thought, implicit de se thoughts cannot: their content is thetic, while the content of de re thoughts is categoric. The notion of an implicit de se thought is claimed to play a central role in accounting (...) for the phenomenon of immunity to error through misidentification. Lewis has attempted to unify de re and de se in the opposite direction: by reducing de re to de se . This, however, works only if we internalize the acquaintance relations. I criticize Lewis's internalization strategy on the grounds that it rests on Egocentrism (the view that every occurrent thought is ultimately about the thinker at the time of thinking). In the conclusion, I suggest another way of unifying de re and de se , by extending the implicit/explicit distinction to de re thoughts themselves. (shrink)

De se beliefs typically pose a problem for propositional theories of content. The Property Theory of content tries to overcome the problem of de se beliefs by taking properties to be the objects of our beliefs. I argue that the concept of self-ascription plays a crucial role in the Property Theory while being virtually unexplained. I then offer different possibilities of illuminating that concept and argue that the most common ones are either circular, question-begging, or epistemically problematic. Finally, I argue (...) that only a primitive understanding of self-ascription is viable. Self-ascription is the relation that subjects stand in with respect to the properties that they believe themselves to have. As such, self-ascription has to be primitive if it is supposed to do justice to the characteristic features of de se beliefs. (shrink)

One of the objections against the thesis of underdetermination of theories by observations is that it is unintelligible. Any two empirically equivalent theories — so the argument goes—are in principle intertranslatable, hence cannot count as rivals in any non-trivial sense. Against that objection, this paper shows that empirically equivalent theories may contain theoretical sentences that are not intertranslatable. Examples are drawn from a related discussion about incommensurability that shows that theoretical non-intertranslatability is possible.

When an agent undergoes fission, how should the beliefs of the fission results relate to the pre-fission beliefs? This question is important for the Everett interpretation of quantum mechanics, but it is of independent philosophical interest. Among other things, fission scenarios demonstrate that ‘self-locating’ information can affect the probability of uncentred propositions even if an agent has no essentially self-locating uncertainty. I present a general update rule for centred beliefs that gives sensible verdicts in cases of fission, without relying on (...) controversial metaphysical or linguistic assumptions. The rule is supported by the same considerations that support standard conditioning in the traditional framework of uncentred propositions. (shrink)

This paper attempts to define indexicality so as to semantically distinguish indexicals from proper names and definite descriptions. The widely-accepted approach that says that indexical reference is distinctive in being dependent on context of use is criticized. A reductive approach is proposed and defended that takes an indexical to be (roughly) an expression that either is or is equivalent to ‘here’ or ‘now’, or is such that a tokening of it refers by relating something to the place and/or time that (...) would have been referred to had ‘here’ and ‘now’ been tokened instead. Alternative reductive approaches are criticized. (shrink)

The fundamental principle of the theory of possible worlds is that a proposition p is possible if and only if there is a possible world at which p is true. In this paper we present a valid derivation of this principle from a more general theory in which possible worlds are defined rather than taken as primitive. The general theory uses a primitive modality and axiomatizes abstract objects, properties, and propositions. We then show that this general theory has very small (...) models and hence that its ontological commitments—and, therefore, those of the fundamental principle of world theory—are minimal. (shrink)

In her effort to recast moral realism in the style of the later Wittgensteinian philosophy of language, Sabina Lovibond seeks to ground moral knowledge in a historical community and its rules of language. In Stanley Hauerwas’ writings, we find an account of Christian ethics that is similarly modeled on Wittgensteinian realism. The main problem with Wittgensteinian moral realism, as it is appropriated by both Lovibond’s and Hauerwas’ society-dependent accounts of morality, is that they are unable to resolve difficult issues created (...) by epistemic relativism. Both thinkers are vulnerable to epistemic relativism in two ways. First, with its contextualist approach to the justification of moral beliefs, their conception of moral realism makes any historical community the ultimate authority in all matters of morality. Second, their conception of moral realism also turns moral truth into a social property of a historical community, while denying the exclusive ownership of truth by one particular community. (shrink)

“I”‐thought is often taken to have a special cognitive significance, with “I” symbolising a subjective way of thinking about oneself that is inapt for communication. In this paper I argue that the way one thinks of oneself in “I”‐thought is immaterial to the meaning of “I,” for in general the psychological role associated with a referential expression is separable from its meaning. With respect to “I,” I suggest that its meaning consists in an interpersonal way of fixing its reference in (...) a context, which is accessible to the speaker and the hearer. Consequently, “I” would have a dual cognitive significance. (shrink)

The thesis that the necessary and the a priori are extensionally equivalent consists of two independent claims: 1) All a priori truths are necessary and 2) all necessary truths are a priori. In Naming and Necessity1 Saul A. Kripke gives examples of necessary but a posteriori truths, so he disagrees with the second leg of the thesis.2 His examples are of two types; on the one hand statements involving essential properties and on the other hand true identity statements. My concern (...) will be with examples of the second type and whether they refute (2). (2), however, is ambiguous and can mean one of three things. (shrink)

This dissertation is a study of the problem of beliefs about oneself, or so-called de se beliefs: for example, the beliefs that I would express by saying 'I am left-handed' or 'I am in Massachusetts'. The problem arises against the background conception of belief as a propositional attitude, i.e., as a relation between conscious subjects and abstract entities that are either true or false absolutely. ;Many philosophers have recently argued that the intentional objects of one's de se beliefs could not (...) be propositions: since, e.g., I can believe the proposition that Neil Feit is left-handed without believing myself to be left-handed , and I can believe any proposition expressed by a sentence of the form 'the F is left-handed'--where 'the F' is a qualitative description--without believing myself to be left-handed . ;I take the position that the argument is sound, and, after surveying various attempts to solve the problem, I defend the self-ascription view of belief: viz., the view that to have a belief is to ascribe a property to oneself. For example, I believe that I am left-handed simply by self-ascribing the property of being left-handed. ;I defend the view against various objections to it, discuss its relations to other views about the objects of belief and the other attitudes, and maintain that it can account for the acceptance of propositions and for beliefs about particular individuals as well as for beliefs directly about oneself. I argue that belief states are best taken to be self-ascribed properties, and try to solve some problems about de re belief from the perspective of the self-ascription view. (shrink)

Human beings seem to capture time and the temporal properties of events and things in thought by having beliefs usually expressed with statements using tense, or notions such as ‘now’, ‘past’ or ‘future’. Tensed beliefs like these seem indispensable for correct reasoning and timely action. For instance, my belief that my root canal is over seems inexpressible with a statement that does not use tense or a temporal indexical. However, the dominant view on the nature of time is that it (...) forms, with space, a four-dimensional continuum where time does not encompass private perspectives or an absolute, fixed present. This ‘tenseless’ theory of time encounters a challenge in integrating tensed belief, because it cannot easily explain what constitutes a tensed belief in a tenseless world and how such a belief works inside our cognitive network to bring about the actions it does. Providing such an account is the main goal of this dissertation. -/- I argue here that the correct way to proceed would be to utilize philosophical theories dealing with indexicality, as the puzzling features of tensed belief are shared with beliefs expressed by first-person or spatial indexicals. In chapters II and III I expand the dominant theories about indexicality (Lewis, Perry, Kaplan) and apply them to tensed belief. I show that each is in certain respects incomplete or inadequate. -/- My preferred account critiques the preceding theories as mis-attributing the indexicality involved to a fully conceptual element in the way people think about time. I argue that we should instead connect tensed belief to not fully conceptual elements thought. For support I turn to work in perceptual psychology that connects beliefs about space to perceptions of spatial features. In chapter IV I develop an analogous argument about temporal thought and discuss how mental representations involved in perceptions are constitutively related to the formation and preservation of tensed beliefs. Combining this story with a tenseless theory of time should give us a complete, metaphysically uncontroversial, account of the way a tensed belief functions in reasoning and produces timely action. (shrink)

During the realist revival in the early years of this century, philosophers of various persuasions were concerned to investigate the ontology of truth. That is, whether or not they viewed truth as a correspondence, they were interested in the extent to which one needed to assume the existence of entities serving some role in accounting for the truth of sentences. Certain of these entities, such as the Sätze an sich of Bolzano, the Gedanken of Frege, or the propositions of Russell (...) and Moore, were conceived as the bearers of the properties of truth and falsehood. Some thinkers however, such as Russell, Wittgenstein in the Tractatus, and Husserl in the Logische Untersuchungen, argued that instead of, or in addition to, truth-bearers, one must assume the existence of certain entities in virtue of which sentences and/or propositions are true. Various names were used for these entities, notably 'fact', 'Sachverhalt', and 'state of affairs'. (1) In order not to prejudge the suitability of these words we shall initially employ a more neutral terminology, calling any entities which are candidates for this role truth-makers. (shrink)