This study considers John Habgood’s understanding of the relation of science and religion, particularly his core notion that an ‘undivided mind’ engages different aspects of reality using disciplines of study appropriate to their specific subject matter. Particular attention is paid to the emergence of those views during his time as a research scientist at Cambridge, their location within the Anglican tradition, their expression in Habgood’s 1992 debate with Richard Dawkins, and their impact on his public ministry as Bishop of Durham and Archbishop of York, especially in public debates concerning bioethics.