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