Timothy Williamson is Professor of Philosophy at the University of Edinburgh.

"The best book in epistemology to come out since 1975"--Keith DeRose, British Journal for the Philosophy of Science

"Newness in philosophy is rare. But this important book offers a boldly original view of the nature of knowledge.... A daring new picture of knowledge is skillfully supported with an argumentative verve that its author, the new professor of logic at Oxford University, has made himself known for.... Throughout, Mr Williamson is bold, ingenious and original; the tradition he opposes appears by contrast stale, scholastic and uninspired.... Anyone with a serious interest in philosophy will have much to learn from this challenging book."--The Economist

"Radical and challenging...without question and important exercise of the 'let me show you a new way of looking at things' kind; something we sorely need in epistemology."--Frank Jackson, Australasian Journal of Philosophy