Focusing on the concepts and interactions of free will, moral responsibility, and determinism, this text represents the most up-to-date account of the four major positions in the free will debate. * Four serious and well-known philosophers explore the opposing viewpoints of libertarianism, compatibilism, hard incompatibilism, and revisionism * The first half of the book contains each philosopher's explanation of his particular view; the second half allows them to directly respond to each other's arguments, in a lively and engaging conversation * Offers the reader a one of a kind, interactive discussion * Forms part of the acclaimed Great Debates in Philosophy series