In the philosophical discussion of the last decades, the position has gained a foothold according to which there is a more or less well-identifiable, partly detached domain of values, which is not necessarily hypostatized, but which supposedly belongs to the furniture of the world. This discussion is commonly conducted using the vocabulary of “moral realism,” and it has in the meantime generated subtly nuanced formulations and argumentations. After an initial phase, the discussion has subsequently centred on the nature of normativity. The subtlety of positions and the ingenuity of argumentations is impressive – expressed in a philosophical style that ceased to be baroque, intended for outdoor use, and has taken up features of rococo, which is at home mainly indoors. This chapter suggests that empirical findings should be taken seriously and develops a novel naturalistic account of normativity informed by the deliverances of the sciences.

This contribution’s point of departure is a reading of Wittgenstein defended elsewhere, on which Wittgenstein never engaged with semantic skepticism in his texts. While this reading distances Wittgenstein from Kripke, an intriguing indirect connection between their work remains. Certain concepts like regularity, constancy, and (qualitative) sameness play a significant role in addressing questions in the foundations of semantics for Wittgenstein. I discuss how, if Wittgenstein's appeal to these notions is legitimate, they may also be of use in diffusing (the distinctively metaphysical aspects of) semantic skepticism. Along the way, I contrast the resulting position with its nearest historical antecedent in the work of David Lewis, arguing that Lewis’s appeal to metaphysically distinguished properties in the foundations of semantics is not only superfluous, but counterproductive.

There is a form of naturalism which runs through Kripke’s account of rule-following. Given the overarching structure of his account, in which Wittgenstein’s naturalism is made to serve the ends of a skeptical solution to the paradox of the regress of interpretations, it inevitably has the effect of giving a reductive interpretation of it. The reductionist aspect was made clear by those, such as Crispin Wright, who made Kripke’s naturalistic element explicit, using non-normative notions in a constructive account of what going by a rule consists in. I look at Wittgenstein’s pivot toward naturalism in the early 1930s and trace its development to the discussion of rule-following in the Philosophical Investigations. I argue for a different understanding of Wittgenstein’s naturalism and its relation to the paradox of PI §201, one which allows it to escape the charges of both reductionism and an unsatisfactory form of quietism.

Most readings of the meaning skepticism Kripke ascribes to Wittgenstein understand it as metaphysical. The threat to meaning is supposed to follow immediately from the impossibility of citing facts in which meaning consists. I offer an alternative, epistemological, reading that is closer to Wittgenstein. What threatens meaning is the worry that, when I use an expression on any given occasion, I cannot know that my use conforms to previous uses of the expression; instead, in Wittgenstein’s terms, I go on “blindly,” without the understanding which is necessary for meaningful use. This reading makes for a stronger skeptical argument, in that it blocks the non-reductionist response of taking meaning facts to be primitive. But the argument, on this reading, can still be answered: not by citing meaning facts but by showing that I can know how to go on with an expression without needing to appeal to what the expression means.

Chapter 2 of Wittgenstein on Rules and Private Language argues that there are no facts about what anyone means by their words, so meaning is a fiction. But some fictions are useful, and Chapter 3 explains why this one is. One side-effect of that explanation is supposed to be the “Private and solitary language argument,” which says that we cannot, or at least cannot usefully, ascribe meaning to an individual “considered in isolation”; it thereby reveals something essentially communitarian about meaning.

This chapter briefly defends that fictionalist reading of Kripke’s great work before arguing at more length that no communitarian conclusion follows. Even if semantic ascriptions are all false, they may still be useful, even when made by, or applied to, or addressed by, an individual “considered in isolation”– whatever exactly this turns out to mean.

I read Kripke’s sketches of our ordinary view of meaning in his book Wittgenstein on Rules and Private Language as attempts to highlight the features of meaning that enable us to draw the distinction between what seems right and what is right. I argue that Kripke thinks the best way to clarify these features of meaning is to describe metasemantic conditions that a speaker’s words must satisfy if the speaker is to be warranted in asserting a sentence in which the words occur. Although the view of meaning I attribute to Kripke is initially compelling, I argue that it rests on a subtle yet fundamental misunderstanding of the distinction between what seems right and what is right.

In what sense is language social? I suggest we distinguish two questions here: First, what degree of social interaction is essential to constituting someone as a language-user? Second, what degree of agreement in meanings must language involve? Each of these questions may be given individualist, interpersonalist, or communitarian answers – not necessarily the same to both. For instance, Davidson is an interpersonalist concerning the first question and an individualist concerning the second. Kripke’s “skeptical solution” is commonly taken to imply a communitarian answer to both of these questions, but in the present chapter I argue that, despite its differences with Davidson’s view of language, it is compatible with constitutive interpersonalism and meaning-individualism. While it may seem as though a genuinely communitarian answer to the first question would imply communitarianism about the second as well, I close the chapter by suggesting that this is not as obvious as it seems.

The Critique of Judgment is concerned with “judgment” as a power of the mind that is expressed in particular acts of judging. This is the sense we draw upon when we say of someone that they have good judgment, or when we put our trust in someone’s judgment. I consider Kant’s regress argument concerning judgment in the Analytic of the Principles of the first Critique. Kant has been read as concluding that if cognition is to be possible it must, on pain of infinite regress, bottom out in some non-rule-governed, “immediate” act or entity. I argue that this interpretation misconstrues the moral of Kant’s argument, as it does that of the rule-following passages in Wittgenstein’s Philosophical Investigations with which it is sometimes aligned. The point of Kant’s argument is that judgment must be exercised: this is its condition. Kant shares with Wittgenstein (properly read) an awareness of the desire that we may have to evade the exercise of judgment and the revelations of the self that it entails. Reflective judgment, as introduced in the third Critique, is a further development of the notion of judgment as necessarily exercised and reflective of a particular mind.

A core philosophical use of the term “objectivity” is to talk about a central metaphysical ideal. The term is employed to pick out aspects of the world that are there in the sense that any thinker who fails to register them can be said to be missing something. If we speak in this connection of a guiding concept of objectivity, we can ask what can be said about the nature of the things that fall under it. We might then speak in this further connection of different possible conceptions of objectivity. Today, thought about objectivity is dominated by a conception on which objectivity is taken to have as its hallmark the exclusion of everything subjective. Starting from a description of the relevant conception of objectivity, this chapter criticizes the kinds of considerations most commonly adduced in the conception’s favor. Along the way, the chapter uses passages from the later philosophy of Wittgenstein as its main reference points. A notable virtue of this method is that it sheds light on the transformative significance of Wittgenstein’s thought for how we construe the concept of objectivity.

What is the relation between meaning and use? This chapter first defends a non-reductionist understanding of Wittgenstein’s suggestion that ‘the meaning of a word is its use in the language’; facts about meaning cannot be reduced to, or explained in terms of, facts about use, characterized non-semantically. Nonetheless, it is contended, facts about meaning do supervene on non-semantic facts about use. That supervenience thesis is suggested by comments of Wittgenstein’s and is consistent with his view of meaning and rule-following. Semantic supervenience is then defended against two criticisms: first, John McDowell’s suggestion that the supervenience thesis falsifies the epistemology of meaning and fails to accommodate common-sense truths about meaning; second, a series of counter-examples proposed by Stephen Kearns and Ofra Magidor, who argue that worlds may differ semantically without differing non-semantically. It is argued that neither criticism is convincing: we should accept the thesis that semantic facts supervene on non-semantic facts.