Martin Stokhof

With a few notable exceptions formal semantics, as it originated from the seminal work of Richard Montague, Donald Davidson, Max Cresswell, David Lewis and others, in the late sixties and early seventies of the previous century, does not consider Wittgenstein as one of its ancestors. That honour is bestowed on Frege, Tarski, Carnap. And so it has been in later developments. Most introductions to the subject will refer to Frege and Tarski (Carnap less frequently) —in addition to the pioneers just mentioned, of course— , and discuss the main elements of their work that helped shape formal semantics in some detail. But Wittgenstein is conspicuously absent whenever the history of the subject is mentioned (usually briefly, if at all). Of course, if one thinks of Wittgenstein’s later work, this is obvious: nothing, it seems, could be more antithetic to what formal semantics aims for and to how it pursues those aims than the views on meaning and language that Wittgenstein expounds in, e.g., Philosophical Investigations, with its insistence on particularity and diversity, and its rejection of explanation and formal modelling. But what about his earlier work, the Tractatus (henceforth )? At first sight, that seems much more congenial, as it develops a conception of language and meaning that is both general and uniform, explanatory..

This book explores in detail the relation between ontology and ethics in the early work of Ludwig Wittgenstein, notably the _Tractatus Logico-Philosophicus_ and, to a lesser extent, the _Notebooks 1914-1916_. Self-contained and requiring no prior knowledge of Wittgenstein's thought, it is the first book-length argument that his views on ethics decisively shaped his ontological and semantic thought. The book's main thesis is twofold. It argues that the ontological theory of the _Tractatus_ is fundamentally dependent on its logical and linguistic doctrines: the tractarian world is the world as it appears in language and thought. It also maintains that this interpretation of the ontology of the _Tractatus_ can be argued for not only on systematic grounds, but also via the contents of the ethical theory that it offers. Wittgenstein's views on ethics presuppose that language and thought are but one way in which we interact with reality. Although detailed studies of Wittgenstein's ontology and ethics exist, this book is the first thorough investigation of the relationship between them. As an introduction to Wittgenstein, it sheds new light on an important aspect of his early thought

The end of philosophy? A Wittgensteinian perspective on the challenge of naturalism The paper addresses the challenges that naturalism poses for the humanities, and for philosophy in particular. After a general overview it takes as its starting point recent discussions on Wittgenstein’s metaphilosophy and argues that from Wittgenstein’s work on certainty, aesthetic experience and religious belief a notion of ‘non-discursive content’ can be extracted that may provide a new take on the naturalistic challenge.

When in 1980, on the Third Amsterdam Colloquium, Johan van Benthem read a paper with the title ‘Why is Semantics What?’ (cf. [1]), I was puzzled: Wasn’t it obvious what semantics is? Why did our concept of it stand in need of justification? Later, much later, I came to appreciate what Van Benthem was doing in this paper (and in some others). Questioning the ‘standard model’, the assumptions on which the working semanticists silently agree, Van Benthem opened up a space of issues to be discussed, questions to be asked, routes to be explored, that had been hidden from view by the unreflective endorsement of just one possible, albeit fruitful way of doing semantics. History, by the way, has proven him right on many points: the monolithic approach that dominated formal semantics of natural language in the seventies, and which relied heavily on Montague’s seminal papers, has given way to a multitude of different ways of tackling semantic issues, using different formal techniques. Some limitations, in particular the almost exclusive focus on sentences as the primary units of analysis, have been overcome. In another respect, however, I feel that the message of Van Benthem’s paper has not caught on sufficiently. He urges semanticists to take more interest in the properties of their tools, arguing that such questions are important if we are to come to a real, deep understanding of what semantics is. Such ‘meta-level’ considerations, although certainly less scarce than they used to be, are still not an everyday concern of the working semanticist.

Update semantics1 embodies a radical view on the relation between context and interpretation. The meaning of a sentence is identified with its context change potential, where contexts are identified with information states. The recursive definition of semantic interpretation is stated in terms of a process of updating an information state with a sentence. Meanings of sentences, then, are update functions. In general, these are partial functions, since the possibility to update with a sentence may depend on the fulfillment of certain constraints (presuppositions, the presence of antecedents for anaphora, etc.). It is important to note that context and interpretation are interdependent: the interpretation process depends on the context, `.

Dynamic logic, broadly conceived, is the logic that analyses change by decomposing actions into their basic building blocks and by describing the results of performing actions in given states of the world. The actions studied by dynamic logic can be of various kinds: actions on the memory state of a computer, actions of a moving robot in a closed world, interactions between cognitive agents performing given communication protocols, actions that change the common ground between speaker and hearer in a conversation, actions that change the contextually available referents in a conversation, and so on.

Reading the Tractatus. And appreciating it The reception history of Wittgenstein’s Tractatus Logico-Philosophicus displays an impressive and persistent diversity. This paper explores possible sources of that diversity and locates them in different takes on the text and its context of origin, and in different perspectives of the readers. This hermeneutics is illustrated by a comparison of two views on the importance of ethics for an understanding of the Tractatus: that of Cora Diamond and the one developed by the authors in previous work.

In the first essay, Stokhof discusses the nature and presuppositions of the formal semantic project as such. He shows that considerations of so-called radical interpretation and the normativity of meaning force us to rethink the relationship between the meaning of a linguistic utterance and its interpretation in a way that is hardly compatible with this project. In the second essay, the author introduces the early Ludwig Wittgenstein as an obvious, if completely neglected, precursor of formal semantics. He discusses the systematic and, to a lesser extent, historical connections between the Tractatus and later formal semantics. From the similarities and differences found, it then draws conclusions regarding the contemporary status of this discipline at the interface of philosophy and the empirical sciences. Finally, the third study looks at formal semantics in terms of its contrast with Wittgenstein's later thinking about language. It attempts to answer the question of whether Wittgenstein's later reflections lead to a theory of linguistic meaning that could be a viable alternative to contemporary formal semantics.