The dissertation has two parts, each dealing with a problem, namely: 1) What is the most adequate account of fuzziness -the so-called phenomenon of vagueness?, and 2) what is the most plausible solution to the sorites, or heap paradox? I will try to show that fuzzy properties are those which are gradual, amenable to be possessed in a greater or smaller extent. Acknowledgement of degrees in the instantiation of a property allows for a gradual transition from one opposite to the (...) other, each intermediate stage constituting an overlap in certain proportion of both contraries. Hence, degrees in the possession of a property give rise to simple contradictions. The reason why I have chosen those two questions is that they provide the main philosophical motivation for a particular brand of an infinite valued and paraconsistent logic. I will claim that Classical logic (CL) is not adequate to handle fuzzy situations, and, being deficient, is in need of being expanded to make room for degrees of truth and weak contradictions. One can hardly deny the importance of the debate, since what is ultimately at stake is what the limits of truth, rationality, intelligibility and possibility are. The main disciplines within which the research moves are the philosophy of language, philosophy of logic, and ontology. (shrink)

In this dissertation, I argue that we should be pluralists about truth and in turn, eliminativists about the property Truth. Traditional deflationists were right to suspect that there is no such property as Truth. Yet there is a plurality of pluralities of properties which enjoy defining features that Truth would have, were it to exist. So although, in this sense, truth is plural, Truth is non-existent. The resulting account of truth is indebted to deflationism as the provenance of the suspicion (...) that Truth doesn't exist. But it would be hasty to simply classify the account as deflationary. Each of the 'truth-like' properties that it recognizes is highly substantive--that is, complex and explanatorily potent. So we should deflate Truth by recognizing that it doesn't exist, but we should also recognize that one of the most vital tasks in truth theory is to discover the essences of the many truth-like properties. My aim here is to do precisely this. (shrink)

This takes a closer look at the actual semantic behavior of apparent truth predicates in English and re-evaluates the way they could motivate particular philosophical views regarding the formal status of 'truth predicates' and their semantics. The paper distinguishes two types of 'truth predicates' and proposes semantic analyses that better reflect the linguistic facts. These analyses match particular independently motivated philosophical views.

I challenge the assumption that the pragmatist-, coherence-, identity- and deflationary theories of truth are essentially incompatible and rival views to the correspondence theory, without endorsing pluralism. With the exception of some versions of the identity theory, the alternative theories only appear to genuinely contradict the correspondence theory, either when they are wedded to a rejection of an objective reality, or when it is assumed that a ‘theory of truth’ is a theory of the function of the truth-predicate. I argue (...) that the correspondence theory should not be understood as a theory about the function of the truth-predicate, and that the core ideas of the alternative views, once separated from any anti-realist convictions, are best understood as complementary views about different aspects of a fairly complex phenomenon, notably of how our beliefs relate to their subject matter and how we reason and talk about that relation. (shrink)

My paper takes issue both with the standard view that the Tractatus contains a correspondence theory and with recent suggestions that it features a deflationary or semantic theory. Standard correspondence interpretations are mistaken, because they treat the isomorphism between a sentence and what it depicts as a sufficient condition of truth rather than of sense. The semantic/deflationary interpretation ignores passages that suggest some kind of correspondence theory. The official theory of truth in the Tractatus is an obtainment theory – a (...) sentence is true iff the state of affairs it depicts obtains. This theory differs from deflationary theories in that it involves an ontology of states of affairs/facts; and it can be transformed into a type of correspondence theory: a sentence is true iff it corresponds to, i.e. depicts an obtaining state of affairs (fact). Admittedly, unlike correspondence theories as commonly portrayed, this account does not involve a genuinely truth-making relation. It features a relation of correspondence, yet it is that of depicting, between a meaningful sentence and its sense – a possible state of affairs. What makes for truth is not that relation, but the obtaining of the depicted state of affairs. This does not disqualify the Tractatus from holding a correspondence theory, however, since the correspondence theories of Moore and Russell are committed to a similar position. Alternatively, the obtainment theory can be seen as a synthesis of correspondence, semantic and deflationary approaches. It does justice to the idea that what is true depends solely on what is the case, and it combines a semantic explanation of the relation between a sentence and what it says with a deflationary account of the agreement between what the sentence says and what obtains or is the case if it is true. (shrink)

?258 of Wittgenstein's Philosophical Investigations is often seen as the core of his private language argument. While its role is certainly overinflated and it is a mistake to think that there is anything that could be called the private language argument, ?258 is an important part of the private language sections of the Philosophical Investigations. As with so much of Wittgenstein's work, there are widely diverse interpretations of why exactly the private diarist's attempted ostensive definition fails. I argue for a (...) version of the no-stage-setting interpretation of the failure of private ostension. On this interpretation, the reason why the diarist cannot establish a meaning for ?S? is that she lacks the conceptual-linguistic stage-setting needed to disambiguate the concentration of her attention (the private analogue of an ostensive definition). Thus, the problem with any subsequent use of ?S? is not that there is no criterion of correctness for remembering the meaning of ?S? correctly, or for re-identifying S correctly in the future. Rather, it is because of the initial failure to define ?S? that there is nothing that could count as a criterion of correctness for the future use of ?S?; there is nothing to remember or re-identify. My argument for the no-stage-setting interpretation consists in showing how well it fits into the rest of the Philosophical Investigations and in defending it against objections from Robert J. Fogelin, Anthony Kenny, and most recently John V. Canfield. Kenny's and Canfield's objections are found to suffer from problems regarding memory scepticism. (shrink)

It is generally thought that truthmaking has to be an internal relation because if it weren’t, then, as David Armstrong argues, “everything may be a truthmaker for any truth”. Depending on whether we take an internal relation to be one that is necessitated by the mere existence of its terms or one that supervenes on the intrinsic properties of its relata, the truthbearers involved in the truthmaking relation must either have their contents essentially or intrinsically. In this paper, I examine (...) Armstrong’s account, according to which what is made true at the fundamental level are mental state tokens. The conclusion is reached that such tokens have their contents neither essentially nor intrinsically, and so, are simply the wrong kind of entities to be made true internally. (shrink)