This is the first of two volumes celebrating Keynes's contribution to economics, and the development of post Keynesian economics in recent years. It reinstates the importance of Keynesian economics and its revival since the end of the 1980s, and the book's authoritative chapters are presented by an outstanding group of international contributors. Divided into two parts, this volume concentrates on microeconomics and econometrics. In the first section on microeconomics, the contributors address issues such as the division and co-ordination of knowledge, and innovation, equilibrium and welfare, as well as transactions costs, imperfect competition, trust, and the theory of the firm. The second part focuses on econometrics within a post Keynesian framework and addresses issues such as realism, the use of empirical evidence, and the case of conflict in wage and unemployment determination. This book will be welcomed by post Keynesian economists, microeconomists and those interested in the development of econometrics.