The book presents Daniel Berrigan Gs contribution and challenge to Catholic Social Thought. His contribution lies in his consistent, comprehensive, theoretical, and practical approach to issues of social justice and peace for the past fifty years. His challenge lies in his critique of capitalism, imperialism, and militarism, inviting Catholic activists and thinkers to undertake not just a reformist but a radical critique and alternative to these realities. The aim of this book is to make Berrigan Gs thought and life available to the academic Catholic community, so that a fruitful interaction can.