"...an impressively erudite, thorough, well argued, and well written book. Keefe presents a lot of difficult material in a lucid and well-organized fashion, and her criticisms of other treatments of vagueness are largely on target." The Philosophical Review
"...a clearly written introduction to the prominent theories of vagueness...a book well worth owning." Philosophy in Review
Vague expressions, such as 'heap', 'red' and 'child', proliferate throughout natural languages, and an increasing amount of philosophical attention is being directed at theories of the logic and semantics associated with them. In this book Rosanna Keefe explores the questions of what we should want from theories of vagueness and how we should compare them. Her powerful and original study will be of interest to readers in philosophy of language and of mind, philosophical logic, epistemology and metaphysics.