Abstract. Ian Barbour's Religion in an Age of Science is a welcome systematic, theoretical overview of the relations between science and religion, culminating his long career with a balanced and insightful appraisal. The hallmarks of his synthesis are critical realism, holism, and process thought. Barbour makes even more investment in process philosophy and theology than in his previous works. This invites further inquiry about the adequacy of a highly general process metaphysics in dealing with our particular, deeply historical world; also further inquiry about the adequacy of its panexperientialism and incrementalism.