Review: Discussion: "The Guise of a Reason"

Contribution to a book symposium on David Velleman's THE POSSIBILITY OF PRACTICAL REASON. In this book, Velleman argues that agency is compatible with a causal conception of the world, since the role of the agent can be played in this conception by an aim of self-knowledge instantiated in the mechanisms governing mental states. This article argues (i) that he must show what at the causal level plays the role of the agent's awareness of the normative guise of reasons and (ii) that any attempt to provide the needed metaethical account of the normative property of being a reason will either be implausible or require serious changes in his "story of motivation".