Planning Theory has a history of common debates about ideas and practices and is rooted in a critical concern for the ”improvement” of human and environmental well-being, particularly as pursued through interventions which seek to shape environmental conditions and place qualities.. The first volume in this three volume series, Foundations of the Planning Enterprise, includes articles and papers which offer a unique general introduction to planning theory. The authors review the subject”s development, its recurrent themes, its contemporary preoccupation as rational scientific management and its relations to other fields. The editors supplement the collection with an introductory overview as well as detailed introductions to each part. This will be an essential purchase for planning libraries around the world.