How is knowledge of the external world possible? How is knowledge of other minds possible? How is a priori knowledge possible? These are all examples of how-possible questions in epistemology. In this highly original book Quassim Cassam explains how such questions arise and how they should be answered.

In Unnatural Doubts, Michael Williams constructs a masterly polemic against the very idea of epistemology, as traditionally conceived.

Stephen Mulhall presents the first full philosophical study of the work of Stanley Cavell. Cavell, a leading contemporary American thinker, is best known for his highly influential contributions to the fields of film studies, Shakespearian literary criticism, and the confluence of psychoanalysis and literary theory; Mulhall examines the broad spectrum of his thought, elucidating its essentially philosophical roots and trajectory.

This dissertation aims to construct a non-dogmatic defence of common sense. It tries to show why the absence of justification for the judgements of common sense, which the sceptic reveals, does not invalidate them.

In his Philosophical Investigations Wittgenstein describes, and represents himself as pursuing, a way of doing philosophy without putting forward philosophical theses. I exemplify his approach with a sketch of his treatment of rule following. I focus in particular on the simple case of following a signpost, conceived as an expression of a rule for getting to a destination. Wittgenstein uncovers a threat that we will find it mysterious how one could learn from a signpost which way to go, and he (...) dissolves the threat, not by putting forward philosophical theses, but by reminding us of things we already knew about signposts. Insofar as the point of Wittgenstein's procedure is to give philosophy peace, the label “quietism” fits. I take issue with readings of Wittgenstein's quietism that represent him as uncovering a need for positive philosophical work, but using quietism as a pretext for declining to do the work himself. Wittgensteinian quietism is not a stance of complacency or idleness. The kind of thing Wittgenstein does is difficult and laborious. It requires accurate and sympathetic engagement with frames of mind in which positive philosophy seems to be necessary. (shrink)

1. Presumably the point of, say, inculcating a moral outlook lies in a concern with how people live. It may seem that the very idea of a moral outlook makes room for, and requires, the existence of moral theory, conceived as a discipline which seeks to formulate acceptable principles of conduct. It is then natural to think of ethics as a branch of philosophy related to moral theory, so conceived, rather as the philosophy of science is related to science. On (...) this view, the primary topic of ethics is the concept of right conduct, and the nature and justification of principles of behaviour. If there is a place for an interest in the concept of virtue, it is a secondary place. Virtue is a disposition to behave rightly; the nature of virtue is explained, as it were, from the outside in. (shrink)

1. I am going to work with an idea from Sellars, that knowledge—at least as enjoyed by rational animals—is a certain sort of standing in the space of reasons. My concern is a familiar philosophical dialectic, which I shall approach in terms of what happens to the Sellarsian idea when the image of standings in the space of reasons undergoes a certain deformation. That it is a deformation is something we can learn from how unsatisfactory the familiar dialectic is.

The relation of Wittgenstein’s later philosophy to skepticism seems to be ambiguous, since he rejects radical skepticism but also highlights the groundlessness of our beliefs. In this paper, I am going to discuss Wittgenstein’s hinge propositions in this respect. Against the usual view, I will show that they do not function as a contextualist or foundationalist refutation of skepticism. What is more, they also do not confirm skepticism. In contrast, I will argue that following Wittgenstein skepticism is neither false nor (...) true, but still has a point, which can be elucidated with Stanley Cavell’s concept of a truth of skepticism. This concept roughly states that we can not know about the existence of the world and the others, but that we have to acknowledge them. With the help of Wittgenstein, I am going to clarify this position. The key idea is that the problem of skepticism can be understood as a metaphorical way of presenting the finiteness of the human condition and that vertiginous skeptical irritations lead to an adequate human self-understanding in this respect. (shrink)

Forthcoming, Journal of Philosophy [pdf manuscript].

The Illusion of Doubt confronts one of the most important questions in philosophy and beyond: what can we know? The radical sceptic's answer is 'not very much' if we cannot prove that we are not subject to deception. For centuries philosophers have been impressed by the radical sceptic's move, but this book shows that the radical sceptical problem turns out to be an illusion created by a mistaken picture of our evidential situation. This means that we don't need to answer (...) the radical sceptical problem 'head on', but rather to undermine the philosophical assumptions that it depends on. For without these assumptions, radical scepticism collapses all by itself. This result is highly significant, as it manages to dissolve one of the most intractable philosophical problems that has bedevilled some of the greatest minds until the present day. (shrink)

Wittgenstein is usually taken to have held that the use of a term is not mentally constrained. That is utterly wrong. A use of language unconstrained by meaning is attributed by him to "meaning-blind" or "aspect-blind" creatures, not to us. We observe meaning when an aspect dawns on us; meaning is the impression (Eindruck) of a term as fitting something; hence, unlike pain, it cannot stand alone. That is a mentalistic theory of meaning: use is determined by images (Vorstellungen) that (...) play semantic roles in virtue of their aesthetic properties. Although a term may be arbitrarily interpreted, aesthetic reasons determine which interpretation be seen as right for it. (shrink)

I focus on two questions: what is knowledge, and how is knowledge possible? The latter is an example of a how-possible question. I argue that how-possible questions are obstacle-dependent and that they need to be dealt with at three different levels, the level of means, of obstacle-removal, and of enabling conditions. At the first of these levels the possibility of knowledge is accounted for by identifying means of knowing, and I argue that the identification of such means also contributes to (...) a proper understanding of what knowledge is. (shrink)

Reissued with a new preface and a new essay on Macbeth, King Lear, Othello, Coriolanius, Hamlet and The Winter's Tale, this famous collection of essays on Shakespeare's tragedies considers the plays as responses to the crisis of knowledge and the emergence of modern skepticism.

The main thrust of the present work is to show why truth and truth bearers lie essentially beyond the descriptive reach of semantics, and to outline a theory of ...

Does scepticism threaten our common sense picture of the world? Does it really undermine our deep-rooted certainties? Answers to these questions are offered through a comparative study of the epistemological work of two key figures in the history of analytic philosophy, G. E. Moore and Ludwig Wittgenstein.

Thought's Footing is an enquiry into the relationship between the ways things are and the way we think and talk about them. It is also a study of Wittgenstein's Philosophical Investigations: Charles Travis develops his account of certain key themes into a unified view of the work as a whole. The central question is: how does thought get its footing? How can the thought that things are a certain way be connected to things being that way?

This radical reading of Wittgenstein's third and last masterpiece, On Certainty, has major implications for philosophy. It elucidates Wittgenstein's ultimate thoughts on the nature of our basic beliefs and his demystification of scepticism. Our basic certainties are shown to be nonepistemic, nonpropositional attitudes that, as such, have no verbal occurrence but manifest themselves exclusively in our actions. This fundamental certainty is a belief-in, a primitive confidence or ur-trust whose practical nature bridges the hitherto unresolved categorial gap between belief and action.

1. I am going to work with an idea from Sellars, that knowledge—at least as enjoyed by rational animals—is a certain sort of standing in the space of reasons. My concern is a familiar philosophical dialectic, which I shall approach in terms of what happens to the Sellarsian idea when the image of standings in the space of reasons undergoes a certain deformation. That it is a deformation is something we can learn from how unsatisfactory the familiar dialectic is.

The appeal to ordinary language is a central feature of Wittgenstein’s later philosophy: he reminds us that our words find meaning in the ordinary practices and forms of life in which they are used. This emphasis on the ordinary may seem to clash with Heidegger’s claim that average everyday understanding is marked by inauthenticity: is Wittgenstein’s emphasis on ordinary language fundamentally inauthentic? On the contrary, I argue, Wittgenstein’s emphasis on the ungroundedness of our ordinary practices parallels Heidegger’s discussion of anxiety (...) and uncanniness, suggesting that we can unearth something like a Heideggerian appeal to authenticity in Wittgenstein’s appeal to ordinary language. (shrink)

The chapter begins by exploring a philosophical case study of the use of intuitions — viz., the debate regarding the problem of radical scepticism, paying particular attention to key figures within this debate such as Barry Stroud, John Austin, and Ludwig Wittgenstein. It contends that this debate demonstrates something interesting about the nature of intuitions and the role that they can play in philosophical inquiry. In particular, the chapter argues that we need to think of the philosophical use of intuitions (...) as at least sometimes involving a significant level of expertise. The chapter closes by considering the relevance of this point about philosophical intuitions to the negative programme in experimental philosophy. (shrink)