Mancur Olson's classic work explains the ways in which political and social instability lay the foundation for economic growth, why economic stability can produce stagnation, and how special interest groups can ultimately lead a nation to decline. In a new introduction to this Veritas edition, Edward L. Glaeser explores the continuing relevance of this book and why it remains a must-read for anyone who wants insight into the economic and political crises of our time.