A ""conversation"" on contemporary political issues by a clergyman and a layman concerned about Vietnam and related causes. Berger, Professor of Sociology at the New School for Social Research, carefully states his own case for a ""conservative humanism,"" while Neuhaus, a radical activist pastor in the Williamsburg/Bedford-Stuyvesant section of Brooklyn, contents himself with defining courses and exposing options. But from their different perspectives on political change and historical continuity, the two arguments converge in their emphasis on the relation of compassion to justice, their stress on human values over unyielding ideologies. Both demand urgent action for far-reaching changes in American life, ""particularly in the way American power is exercised in the world and at home."" On the prospect of armed revolution, each finds the United States unripe, but they differ on the probabilities that such a last-resort course could become necessary. Neuhaus, more open to the revolutionary alternative, nonetheless painstakingly examines the realistic moral and political decisions which must inform such a choice. A clear exposition of the socially conscious conservative and the restrained radical approaches to America's problems, with significant similarities of substance.