A.R. Vidler's A Century of Social Catholicism: 1820-1920 is a comprehensive study of the rise and development of social Catholic thought in France, focusing on how the Church responded to the social problems of industrialization and political change, from pre-1848 to the more complex periods of the Second Republic and the Second Empire, tracing the efforts of Catholic theologians and leaders to bridge the faith with modern social realities and challenges such as liberalism and socialism. Overall, the book is a historical exploration of how the European (and particularly French) Catholic Church adapted and developed new approaches to social issues in the face of a rapidly changing modern world and also sought to understand and address the challenges of industrialization, social injustice, and new political ideologies through the lens of its social teaching, laying the foundation for modern Catholic social teaching.