Jeff Speaks

What can we know about God by reason alone? Philosophical theology is the attempt to obtain such knowledge. An ancient tradition, which is perhaps more influential now than ever, tries to derive the attributes of God from the principle that God is the greatest possible being. Jeff Speaks argues that that constructive project is a failure. He also argues that the related view that the concept of God is the concept of a greatest possible being is a mistake. In the last chapter, he sketches an alternative path forward.

The most widely accepted and well worked out approaches to the foundations of meaning take facts about the meanings of linguistic expressions at a time to be derivative from the propositional attitudes of speakers of the language at that time. This mentalist strategy takes two principal forms, one which traces meaning to belief, and one which analyzes it in terms of communicative intentions. I argue that either form of mentalism fails, and conclude by suggesting that we can do better by focusing on connections between linguistic meaning and the contents of perceptions (rather than beliefs or intentions), and by (following Kripke's approach to reference) replacing questions about the nature of meaning with questions about the nature of term introduction and meaning transmission.

I discuss and defend two arguments against semantic theories which wish to avoid commitment to propositions. The first holds that on the most plausible semantics of a class of natural language sentences, the truth of sentences in that class requires the existence of propositions; and some sentences in that class are true. The second holds that, on the best understanding of the form of a semantic theory, the truth of a semantic theory itself entails the existence of propositions. Much of the discussion engages Davidsonian alternatives to a propositionalist semantic theory.

In Narrow Content, Hawthorne & Yli-Vakkuri provide an admirably clear and precise framework for understanding the debate between internalist and externalist theories of mental content. They also present a series of arguments against internalism. They identify two views — which they call 'thought-relativism' and 'quasi-internalism' — which seem to avoid their main line of argument. I discuss Hawthorne & Yli-Vakkuri's arguments against these two views, and explore a few different ways in which they might be developed.

In this paper I do four things. (1) I explain one clear thing that ‘the problem of the unity of the proposition’ might mean. (2) I lay out a few different versions of the theory of propositions as cognitive acts, and explain why this problem arises for the version of that theory which has been defended in different forms by Peter Hanks and Scott Soames. (3) I argue that the natural ways in which the act theorist might try to solve the problem fail to solve it; (4) I propose a way to fix the problem, and then I explain how the problem re-emerges in the act theorist’s treatment of propositional attitude relations.

In the past twenty years, issues about the relationship between perception and thought have largely been framed in terms of the question of whether the contents of perception are nonconceptual. I argue that this debate has rested on an ambiguity in `nonconceptual content' and some false presuppositions about what is required for concept possession. Once these are cleared away, I argue that none of the arguments which have been advanced about nonconceptual content do much to threaten the natural view that perception and thought are relations to the same kind of content.

In "Truth and Meaning", Davidson suggested that a truth theory can do the work of a theory of meaning: it can give the meanings of expressions of a language, and can explain the semantic competence of speakers of the language by stating information knowledge of which would suffice for competence. From the start, this program faced certain fundamental objections. One response to these objections has been to supplement the truth theory with additional rules of inference (e.g. from T-sentences to meaning theorems). I argue that these modifications of Davidson's original idea fail to solve the problems with Davidsonian semantics, and that the prospects for a solution to these problems within the Davidsonian framework are dim. A general lesson to be drawn is that Davidsonian theories do not provide a viable alternative to Russellian and Fregean approaches to semantics which recognize the reality of language-independent contents.

Theories of propositions as complex acts, of the sort recently defended by Peter Hanks and Scott Soames, make room for the existence of distinct propositions which nonetheless represent the same objects as having the same properties and standing in the same relations. This theoretical virtue is due to the claim that the complex acts with which propositions are identified can include particular ways of cognizing, or referring to, objects and properties. I raise two questions about this sort of view—one about what it means to stand in a propositional attitude relation to a complex act of this sort, and one about which ways of cognizing can be parts of propositions. Both questions turn out to be difficult for the complex act theorist to answer in a satisfactory way.

One of Kripke's fundamental objections to descriptivism was that the theory misclassifies certain a posteriori propositions expressed by sentences involving names as a priori. Though nowadays very few philosophers would endorse a descriptivism of the sort that Kripke criticized, many find two-dimensional semantics attractive as a kind of successor theory. Because two-dimensionalism needn't be a form of descriptivism, it is not open to the epistemic argument as formulated by Kripke; but the most promising versions of two-dimensionalism are open to a close relative of that argument.

The nature of predication, and its relation to truth, is the central topic of Davidson’s posthumously published Truth and Predication . The main task which an account of predication should accomplish is a solution to the problem of predication; and that, Davidson tells us, is the problem of explaining what makes some collections of words, but not others, true or false (86). It is so-called because, Davidson thinks, the principal challenge faced by any answer to this problem is the problem of explaining the distinctive contribution made by predicates to the truth or falsity of sentences

Many alleged counter-examples to intentionalism, the thesis that the phenomenology of perceptual experiences of a given sense modality supervenes on the contents of experiences of that modality, can be avoided by adopting a liberal view of the sorts of properties that can be represented in perceptual experience. I argue that there is a class of counter-examples to intentionalism, based on shifts in attention, which avoids this response. A necessary connection between the contents and phenomenal characters of perceptual experiences can be preserved by distinguishing perceptual phenomenology from the phenomenology of attention; but even if this distinction is viable, these cases put pressure on the thesis that phenomenal character can, in general, be explained in terms of mental representation.

The most widely accepted and well worked out approaches to the foundations of meaning take facts about the meanings of linguistic expressions at a time to be derivative from the propositional attitudes of speakers of the language at that time. This mentalist strategy takes two principal forms, one which traces meaning to belief, and one which analyzes it in terms of communicative intentions. I argue that either form of mentalism fails, and conclude by suggesting that we can do better by focusing on connections between linguistic meaning and the contents of perceptions (rather than beliefs or intentions), and by (following Kripke's approach to reference) replacing questions about the nature of meaning with questions about the nature of term introduction and meaning transmission.

Millians sometimes claim that we can explain the fact that sentences like "If Hesperus exists, then Hesperus is Phosphorus" seem a posteriori to speakers in terms of the fact that utterances of sentences of this sort would typically pragmatically convey propositions which really are a posteriori. I argue that this kind of pragmatic explanation of the seeming a posterioricity of sentences of this sort fails. The main reason is that for every sentence like the above which (by Millian lights) is a priori, seems a posteriori to most speakers, and would typically be used to convey a posteriori propositions, there is another which (again, by Millian lights) is a priori, seems a posteriori to most speakers, but can only typically be used to convey a priori propositions

This is the written version of a reply to Michael Tye's "Transparency, Qualia Realism, and Representationalism," given at the 40th Oberlin Colloquium in Philosophy. It argues that, given one standard way of understanding these theses, qualia realism is trivially true and transparency theses are trivially false. I also discuss four objections to Tye's claim that the phenomenal character of the experience of red just is redness, and conclude by arguing that philosophers of perception should state their claims as about the properties of subjects of experience rather than as about the properties of experiences themselves.

I argue that the transparency of experience provides the basis of arguments both for intentionalism -- understood as the view that there is a necessary connection between perceptual content and perceptual phenomenology -- and for the view that the contents of perceptual experiences are Russellian propositions. While each of these views is popular, there are apparent tensions between them, and some have thought that their combination is unstable. In the second half of the paper, I respond to these worries by arguing that Russellianism is consistent with intentionalism, that their conjunction is consistent with both internalism about phenomenology and externalism about perceptual content, and that the resulting view receives independent support from the relationship between hallucination and thought.

Alvin Plantinga gave a reductio of the conjunction of the following three theses: Existentialism (the view that, e.g., the proposition that Socrates exists can't exist unless Socrates does), Serious Actualism (the view that nothing can have a property at a world without existing at that world) and Contingency (the view that some objects, like Socrates, exist only contingently). I sketch a view of truth at a world which enables the Existentialist to resist Plantinga's argument without giving up either Serious Actualism or Contingency

Since the 1960's, work in the analytic tradition on the nature of mental and linguistic content has converged on the views that social facts about public language meaning are derived from facts about the thoughts of individuals, and that these thoughts are constituted by properties of the internal states of agents. I give a two-part argument against this picture of intentionality: first, that if mental content is prior to public language meaning, then a view of mental content much like the causal-pragmatic theory presented by Robert Stalnaker in Inquiry must be correct; second, that the causal-pragmatic theory is false. I conclude with some positive suggestions regarding alternative solutions to the `problem of intentionality.'.