What is this thing called planning? What is its domain? What do planners do? How do they talk? What are the limits and possibilities for planning imposed by power, politics, knowledge, technology, interpretation, ethics, and institutional design? In this comprehensive volume, the foremost voices in planning explore the foundational ideas and issues of the profession. Explorations in Planning Theory is an extended inquiry into the practice of the profession. As such, it is a landmark text that defines the field for today's planners and the next generation. As Seymour J. Mandelbaum notes in the introduction, "the shared framework of these essays captures a pervasive interest in the behavior, values, character, and experience of professional planners at work." All of the chapters in this volume are written to address arguments that are important in the community of planning theoreticians and are crafted in the language of that community. While many of the contributors included here differ in their styles, the editors note that students, experienced practitioners, and scholars of city and regional planning will find this work illuminating and helpful in their research.