Jonathon Dancy is Professor of Philosophy at the University of Keele, where he has taught since 1971. His publications include
An Introduction To Contemporary Epistemology (Blackwell, 1985) and
Berkeley: An Introduction (Blackwell, 1987).
Ernest Sosa is Romeo Elton Professor of Philosophy at Brown University. With Jaegwon Kim he is also co-editor of another volume in the Blackwell Companions to Philosophy series, A Companion to Metaphysics, and his other publications include Knowledge in Perspective (1991).