The essays contained in this volume are divided into four sections. The first section contains three essays that explore the concept of fundamental uncertainty and its unique role in The General Theory. The second section contains four essays that examine the place of The General Theory in the history of macroeconomics since 1936. The third section contains three essays that explore the interrelationships among Keynes, Friedman, Kaldor, Marx and Sraffa and their approaches to macroeconomic theory and policy. The final section contains a pair of essays that provide several new interpretations of The General Theory and its position within macroeconomics.