Simon Kuznets provides a succinct analysis, illustrated with relevant statistical data, of the nature and development of economic growth since 1945. His lectures, delivered in 1964 under the auspices of the Haynes Foundation at Los Angeles and Riverside, California, deal with the diversity and interdependence of world economic structure, characteristics of modern economic development, and the aftermath of World War II. In his final lecture, Kuznets presents a summary of his findings and an exploratory discussion of postwar economic growth and its possible directions in the future.