"This is a thoughtful, detailed, empirically informed, and trenchant discussion of some main ideas and issues at the center of our understanding of the phenomenon of motivation --including especially motivation of intentional action and intention, but also including motivation of belief. Mele's book makes contributions to our understanding of intentional action, of the relation between motivation and normativity, of practical reasoning, of self control, of forms of agency sometimes seen as distinctively human, and of motivated belief...The book makes many detailed and significant contributions to various contemporary discussions and will be of significant interest to a wide range of scholars of human action."--Michael Bratman, Stanford University