"This beautiful little book is certainly suitable for anyone who has had an introductory course in physics and even for some who have not."—Joshua N. Goldberg, Physics Today

"An imaginative and convincing new presentation of Einstein's theory of general relativity. . . . The treatment is masterful, continual emphasis being placed on careful discussion and motivation, with the aim of showing how physicists think and develop their ideas."—Choice

Robert Geroch is professor in the departments of physics and mathematics, the Enrico Fermi Institute, and the College at the University of Chicago. He is the author of Mathematical Physics.