Johnson's chapter describes the importance of metaphor for the study of philosophy ("Philosophy's Debt to Metaphor"). Not only is metaphor a topic that has long interested philosophers, but philosophers use the same conceptual resources of metaphor as do any human being, often without any awareness, and indeed outright rejection, of the fact that they are doing so. Johnson shows how perennial questions in philosophy - What is mind and how does it work? What does it mean to be a person? What is the nature of reality? Is there such a thing as free will? What things or actions are morally good? - are all dependent on metaphor for their answers. Philosophical reasoning and theories often rest on a foundation of simple and complex metaphors. Johnson concludes that giving proper acknowledgment to metaphor, and metaphoric thinking, is essential to future progress in philosophy. (Raymond Gibbs)