Since the publication of Keynes' General Theory there has been a steady increase in interest in dynamics. With it has only recently come the realization that linear dynamics are very restrictive. This book is a collection of essays on nonlinear economic dynamics, mostly written very recently. They attempt to combine in one integral whole the analysis of cycles and growth, neither of which ever exists in the absence of the other. The essays cover cyclical and unsteady growth, multisectoral models, discrete time and irregularity, Schumpeter's vision and personal statements.