Since the publication of Keynes' General Theory there has been a steadily increasing interest in dynamics. With it has come the realization that linear dynamics are very restrictive. This book is a collection 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 exists in the absence of the other. The essays cover cyclical and unsteady growth, multisectoral models, discrete-time modelling and irregularity, Schumpeter's vision, and personal statements.