For many generations Christians have considered sin almost exclusively in terms of the individual person: "my sins" and "your sins." These sins, moreover, have been thought to have their roots in our "fallen human nature," the consequence of original sin. Recently, however, the bishops and theologians of Latin America
have begun to speak of"sinful structures," "sinful institutions', and even "sinful societies." These terms sound rather strange to North American ears, but an understanding of them is vital if Christians here are to live up to their calling to be both prophetic and creative agents for change within their communities-global as well as national. These communities are scarred by sinful structures and sinful institutions, if we but had the eyes to
see them as they are. Evolution and Guilt will clear our vision. Through a careful exegisis of Scripture and an examination of thinkers like Teilhard de Chardin, Marx, and Freud, Juan Luis Segundo demonstrates why Christianity in our time must theologize politics and politicize theology.