The Externalist Challenge

The debate between internalism and externalism has become a focal point of attention both in epistemology and in the philosophy of mind and language. Externalism challenges basic traditional internalist conceptions of the nature of knowledge, justification, thought and language. What is at stake, is the very form that theories in epistemology and the philosophy of mind ought to take. This volume is a collection of original contributions of leading international authors reflecting on the present state of the art concerning the exciting controversies between internalism and externalism.

Leading philosophers present essays on an issue central to philosophy of mind, language, and perception: the nature of our thought about the external world. The essays explore directions for future research, an important resource for anyone working at the interface of semantics and mental representation.

Normative Externalism argues that it is not important that people live up to their own principles. What matters, in both ethics and epistemology, is that they live up to the correct principles: that they do the right thing, and that they believe rationally. This stance, that what matters are the correct principles, not one's own principles, has implications across ethics and epistemology. In ethics, it undermines the ideas that moral uncertainty should be treated just like factual uncertainty, that moral ignorance frequently excuses moral wrongdoing, and that hypocrisy is a vice. In epistemology, it suggests we need new treatments of higher-order evidence, and of peer disagreement, and of circular reasoning, and the book suggests new approaches to each of these problems. Although the debates in ethics and in epistemology are often conducted separately, putting them in one place helps bring out their common themes. One common theme is that the view that one should live up to one's own principles looks less attractive when people have terrible principles, or when following their own principles would lead to riskier or more aggressive action than the correct principles. Another common theme is that asking people to live up to their principles leads to regresses. It can be hard to know what action or belief complies with one's principles. And now we can ask, in such a case should a person do what they think their principles require, or what their principles actually require? Both answers lead to problems, and the best way to avoid these problems is to simply say people should follow the correct principles.

The question of the a priori—can an adequate epistemology be developed without appeal to a non-empirical source of justification?—is a core issue running throughout the history of philosophy, and recent decades have seen some provocative and potentially epochal work on the issue. Arthur Sullivan provides a clear-headed evaluation of the upshot of these developments. He argues that the notion of the constitutive a priori provides the best means, all things considered, of accommodating these recent developments into a coherent, compelling view. The constitutive a priori is most commonly known as a position within the philosophy of science, holding that one of Kant’s signature moves provides the means to incorporate unforeseen drastic shocks into existing theory. This book shows that this notion of the constitutive a priori provides not merely a satisfactory epistemological framework, but, further, a compelling way to accommodate and integrate some of the most significant lessons learned in twentieth century philosophy. Its distinctive contribution lies in the case it builds for taking this constitutive a priori orientation as a good means of integrating and consolidating certain epochal insights of Wittgenstein, Carnap, Quine, Kripke, and Kaplan.

Semantic externalism is the view that the meanings of referring terms, and the contents of beliefs that are expressed by those terms, are not fully determined by factors internal to the speaker but are instead bound up with the environment. The debate about semantic externalism is one of the most important but difficult topics in philosophy of mind and language, and has consequences for our understanding of the role of social institutions and the physical environment in constituting language and the mind. In this long-needed book, Jesper Kallestrup provides an invaluable map of the problem. Beginning with a thorough introduction to the theories of descriptivism and referentialism and the work of Frege and Kripke, Kallestrup moves on to analyse Putnam’s Twin Earth argument, Burge’s arthritis argument and Davidson’s Swampman argument. He also discusses how semantic externalism is at the heart of important topics such as indexical thoughts, epistemological skepticism, self-knowledge, and mental causation. Including chapter summaries, a glossary of terms, and an annotated guide to further reading, Semantic Externalism an ideal guide for students studying philosophy of language and philosophy of mind.

Knowledge, from Plato onwards, has been considered in relation to justified belief. Current debate has centred around the nature of the justification and whether justified belief can be considered an internal or extenal matter. Epistemological internalists argue that the subject must be able to reflect upon a belief to complete the process of justification. The externalists, on the other hand, claim that it is only necessary to consider whether the belief is reliably formed, and argue that the ability to know by reflection is not required for a justified belief. In the historical section of this book the three most important epistemologists, Plato, Descartes and Hume, as well as the ancient epistemologies of the stoics, Academics and Pyrhonians, are considered. In reconsidering the history of epistemology the author is led to argue against hte view that internalism is historically dominant. His critique of internalism is then developed into a sustained argument against many of its forms, and he goes onto defend an externalist, reliabilist epistemology.

To what extent are meaning, on the one hand, and knowledge, on the other, determined by aspects of the 'outside world'? Internalism and Externalism in Semantics and Epistemology presents twelve specially written essays exploring these debates in metaphysics and epistemology and the connections between them. In so doing, it examines how issues connected with the nature of mind and language bear on issues about the nature of knowledge and justification (and vice versa). Topics discussed include the compatibility of semantic externalism and epistemic internalism, the variety of internalist and externalist positions (both semantic and epistemic), semantic externalism's implications for the epistemology of reasoning and reflection, and the possibility of arguments from the theory of mental content to the theory of epistemic justification (and vice versa).

Moral Motivation presents a history of the concept of moral motivation. The book consists of ten chapters by eminent scholars in the history of philosophy, covering Plato, Aristotle, later Peripatetic philosophy, medieval philosophy, Spinoza, Locke, Hume, Kant, Fichte and Hegel, and the consequentialist tradition. In addition, four interdisciplinary "Reflections" discuss how the topic of moral motivation arises in epic poetry, Cicero, early opera, and Theodore Dreiser. Most contemporary philosophical discussions of moral motivation focus on whether and how moral beliefs by themselves motivate an agent (at least to some degree) to act. In much of the history of the concept, especially before Hume, the focus is rather on how to motivate people to act morally as well as on what sort of motivation a person must act from (or what end an agents acts for) in order to be a genuinely ethical person or even to have done a genuinely ethical action. The book shows the complexity of the historical treatment of moral motivation and, moreover, how intertwined moral motivation is with central aspects of ethical theory.