The book by James M. Buchanan explores how economics has shifted from its roots in moral philosophy to a more institutional focus. Buchanan's work emphasizes the importance of considering the institutional framework in economic analysis. He is known for his contributions to the theory of political economy and the public choice movement. Buchanan's writings cover various economic subfields and highlight the need to understand economic processes within their institutional context. His work has influenced a generation of scholars and has led to the development of new theoretical approaches like public choice and the new political economy. The book presents a collection of Buchanan's key papers, offering valuable insights for both new readers and those familiar with his work.