Susan Jane Dwyer

So far as we know, we are the only species capable of introspection, and thus, sometimes, of insight into our own individual and collective nature. Arguably, the entire discipline of philosophy and, much more recently, of psychology, is premised on this simply stated but complicated fact. We are also a social species, each of us desiring – perhaps, even needing – to live as one among others. Taken together, these perfectly trite observations invite a number of questions regarding the nature of the self and self-consciousness, and about the possibility of successful intersubjective communication. One line of enquiry among these questions, one that is vigorously pursued in The Five Obstructions, concerns the extent to which an individual’s self-understanding depends on the availability to that person of a genuinely second-person perspective. In order properly to understand oneself, does one need to see oneself through another’s eyes – in particular, the eyes of another who is in relation with us? If the answer is affirmative, what obligations do we have to each other to provide secondperson perspectives? How is such a perspective to be achieved? How is it best achieved, morally speaking? As I will try to show here, The Five Obstructions provides a very powerful example of self-revelation facilitated by another. Towards the end..

In chapter one I consider two arguments for the claim that we ought to attribute linguistic knowledge to speakers of a natural language. The a priori argument has it that a theory of understanding reveals what it is that speakers of a language know about their language. The second argument takes the form of an inference to the best explanation, emphasising the idea that speaking and understanding a language is a rational activity carried on by agents with intention and purpose. Linguistic knowledge is attributed to speakers as a way of making such a practice intelligible. ;In chapter two, I examine the several sceptical worries and substantive objections that have been raised to the idea of linguistic knowledge. None of these objections is fatal; rather they direct our attention to the need to specify what kind of knowledge linguistic knowledge is. ;In chapter three I argue that we do best to think of the notion of implicit linguistic knowledge as a "place-holder". ;In chapter four, I turn to a discussion of implicit belief, drawing a distinction between the way in which the content of a belief might be represented in an agent's brain and the kind of access she has to that content. I argue against an account of implicit belief that is motivated by concerns about representation, and for one that focuses on the kind of access an agent has to her implicit beliefs. ;In chapter five I attempt to sketch an account of implicit linguistic knowledge that fulfills its explanatory agenda while avoiding the objections discussed in earlier chapters. A speaker's implicit linguistic knowledge, understood as a set of articulated psychological states, grounds her full-blooded linguistic dispositions. This analysis of implicit linguistic knowledge is not subject to standard objections to that notion. Furthermore, it provides a "non-reductive" explanation of a speaker's language mastery, since it holds a middle ground between strictly biological, or neurophysiological accounts and purely behavioristic accounts of what makes an agent a speaker of a language. ;Finally, I take up the question of whether Dummett can accept my account of implicit linguistic knowledge