Offers a Christian proposal for radical social transformation. Daniel Izuzquiza here proposes a vibrant interdisciplinary theology from the unique perspective of the "least of these" -- the poor -- and extends an invitation to mystical, political, and ecclesial engagement.  In Rooted in Jesus Christ Izuzquiza analyzes the language of theology, the role of social sciences, the transformation of culture, and the church's approach to politics. To that end he dialogues with some of the main theological proposals of the late twentieth century, from Latin American liberation theology to radical theology in the English-speaking world to European political theology. He also offers a more systematic development of radical ecclesiology, analyzing the sources of the proposal as alternative Christian practices. The result is a groundbreaking call to action and change for the entire church.