Abstract: W. M. (Terence) Gorman has been a major figure in the development of economics during the past 40 years. His publications on separability, aggregation, duality, and the modelling of consumer demand are recognized as fundamental contributions to economic theory. Many of his unpublished papers have achieved similar status as privately circulated classics. This volume brings together, for the first time, all Gorman's important work on aggregation across commodities and agents, including separability, budgeting, representative agents, and the construction of capital and labour aggregates; much of this has never been published before. The 26 chapters are arranged in two parts: I. Separability and budgeting, and II. Aggregation across agents and firms. Each chapter (except the first) is preceded by an editorial introduction describing its origin and place within the literature, as well as the main results themselves. The book is of interest to academic economists interested in the foundations of consumer and producer theory, and in the interface between microeconomics and macroeconomics. A second volume of works, Modelling and Methodology, covers topics on duality, demand, trade, and welfare.

Keywords: aggregation, budgeting, capital aggregates, consumer demand, consumer theory, labour aggregates, macroeconomics, microeconomics, producer theory, representative agents, separability