"Economy and Society" is a comprehensive analysis of the relationship between economy and society, focusing on the role of social actions and their impact on economic systems. The book presents a theoretical framework for understanding how economic and social structures influence each other, including the role of bureaucracy, power, and authority. The author also introduces his famous concept of the "Protestant Ethic", linking the rise of capitalism to certain aspects of Christian beliefs. The book is considered a fundamental text in sociology and economics, providing a deep understanding of social and economic phenomena.

"Sabbatai Sevi: The Mystical Messiah" is a comprehensive historical study of Sabbatai Sevi, a 17th-century rabbi who proclaimed himself the Jewish Messiah and led a mass messianic movement that spread across the Jewish diaspora. The book delves into Sevi's life, his messianic claims, and the fervent support he garnered, as well as his eventual conversion to Islam under threat of death by the Ottoman Sultan. This scholarly work examines the theological, social, and psychological aspects of this movement and its long-lasting impact on Jewish communities, providing a deep analysis of the interplay between mysticism and societal norms of the time.

"The True Believer" is a philosophical analysis of the nature of mass movements and the people who constitute them. The book argues that regardless of the specific cause, whether it be religious, political, or social, all mass movements are interchangeable and their followers are essentially the same. The author suggests that the driving force behind these movements is not the ideology itself, but rather the personal dissatisfaction and frustration of the individuals involved. The book also explores the lifecycle of mass movements, from their creation to their eventual dissolution.