Moral language displays a characteristic duality. On the one hand, moral claims seem to be similar to descriptive claims: To say that an act is right seems to be a matter of making an assertion, thus indicating that the speaker has a moral belief about which she can be correct or mistaken. On the other hand, moral claims seem to be different from descriptive claims: There is a sense in which, by claiming that an act is right, a speaker indicates (...) that she is inclined to perform the act, to want others to perform it, and to react with praise towards those who do it. Hybrid theories maintain that utterances of moral sentences have both a descriptive and a practical linguistic function. In this thesis, I investigate how a hybrid theory can best accommodate the descriptive and the practical aspects of moral language. I evaluate and criticize the way that existing hybrid theories have proposed to explain the duality of moral language. The main arguments against these views are that they either: fail to accommodate the way that the practical or attitudinal import of moral claims vary across different contexts and linguistic environments; or that they fail to show how the practical or attitudinal import is reliably inferred by interlocutors in virtue of general communicative principles. I develop and defend a new hybrid theory called ‘dynamic descriptivism’. This theory accommodates the duality of moral language by appeal to the way that moral utterances affect a dimension of communication which consists of the shared assumptions that interlocutors mutually assume to mutually accept. Moreover, I discuss a problem which has affected a wide range of theories of moral language – including existing hybrid theories – which is the problem of explaining what it is that interlocutors disagree about when they disagree about matters of morality. I argue that that dynamic descriptivism offers new resources for solving this problem. (shrink)

It is sometimes argued that contextualism cannot explain (dis)agreements concerning matters of personal taste because it treats sentences involving predicates of taste as indexical. I aim to weaken this charge. Given the idea that people sometimes use indexical sentences to express (dis)agreements about taste, two kinds of (dis)agreement are distinguished, namely doxastic and non-doxastic. Taste (dis)agreements are better explained in terms of the later kind, in which case they become amenable to contextualist treatment. It is argued that if something instantiates (...) a taste property (like being tasty for A), it has to instantiate a corresponding attitudinal property (like being liked by A). Based on this, utterances of taste sentences express propositions that concern tastiness of something (e.g., that X is tasty for A) and these propositions entail other propositions that concern non-doxastic attitudes the speakers bear toward something (e.g., that X is liked by A). One speaker is claimed to (dis)agree with another speaker provided their respective entailed propositions feature (in)compatible non-doxastic attitudes. Although this explanation is similar to hybrid accounts that are currently growing in popularity, it departs from them in some notable respects. (shrink)

ABSTRACTCarnap famously argued that there are two kinds of questions and claims concerning the existence or reality of entities: internal and external ones. We focus on Carnapian external ontological claims of the form: ‘Xs really exist’, where ‘X’ stands for some traditional metaphysical category, such as ‘substance’, ‘fact’ or ‘structure’. While Carnap considered them as meaningless, we consider them as faultlessly meaningful. However, in line with an expressivist guise, we do not claim that they have the meaning they have in (...) virtue of representing a certain range of entities in the world or describing pieces of reality. Quite the contrary, we maintain that they are meaningful because they perform a function that is fundamentally expressive, that is, a non-descriptive function. In particular, they may imply a distinctive type of metalinguistic expressive function. Moreover, we avoid accuses of mentalism insofar as we explain the meaning of external ontological claims in terms of the practical commitments to the adoption of certain linguistic forms they express, rather than as expressing some kind of mental state. (shrink)