To approach her subject John-Steiner goes directly to the source, assembling the thoughts of "experienced thinkers"--artists, philosophers, writers, and scientists able to reflect on their own imaginative patterns. More than fifty interviews (with figures ranging from Jessica Mitford to Aaron Copland), along with excerpts from the diaries, letters, and autobiographies of such gifted giants as Leo Tolstoy, Marie Curie, and Diego Rivera, among others, provide illuminating insights into creative activity. We read, for example, of Darwin's preoccupation with the image of nature as a branched tree while working on his concept of evolution. Mozart testifies to the vital influence on his mature art of the wondrous "bag of memories" he retained from childhood.