Michael E. Bratman is U.G. and Abbie Birch Durfee Professor in the School of Humanities and Sciences, and Professor of Philosophy at Stanford University. His book publications include Intention, Plans, and Practical Reason, Faces of Intention: Selected Essays on Intention and Agency, Structures of Agency: Essays, Shared Agency: A Planning Theory of Acting Together, and Planning, Time, and Self-Governance: Essays in Practical Rationality.