"This book explores that special territory perceived by Albert Einstein: where the unknown takes over from everything that is understandable, familiar, explicable. And that interface between known and unknown is of the very greatest importance: it lies at the heart of the human quest to take knowledge beyond the boundaries of the known. It is what scientists do when they undertake their research, from the trajectories of comets to the replication of cells. But it is also what religious people do when they start to explore their spirituality, and their relationship with what they perceive to be the divine. This mutual effort to 'know the unknowable' is a profoundly important way in which human beings explore the limits of themselves, as well as of the universe. It is best understood not as a roadblock, or a frustrating dead end, but rather as an invitation to fresh marvels and mystery."--BOOK JACKET.
Includes bibliographical references and index.