Many appreciate Richard P. Feynman's contributions to twentieth-century physics, but few realize how engaged he was with the world around him-how deeply and thoughtfully he considered the religious, political, and social issues of his day. Now a wonderful book-based on a previously unpublished, three-part public lecture he gave at the University of Washington in 1963-shows us this other side of Feynman, as he expounds on the inherent conflict between science and religion, on people's distrust of politicians, and on our universal fascination with flying saucers, faith healing, and mental telepathy.