The actualities of Madame Curie’s life have become cloaked in a romantic myth created to suit the beliefs and proclivities of many people — journalists, scientists, medical practitioners, feminists, businessmen, industrialists, and even Madame Curie herself. She is remembered as a scientific Joan of Arc. Paris streets are named after Madame Curie and her husband, Pierre; the French 500-franc note (now a collector’s item) is imprinted with her face and her so-called “miserable shed” laboratory, as well as several scenes from her life. Stamps and coins bear her image. The World War I automobiles that were refitted to contain X-ray equipment were known as “Les Petites Curie.” Semi-documentaries and feature films contribute to her legend. The idealization of Marie Curie the scientist has in general been portrayed as passionate, hardworking, dedicated, and a seeker of a cure for cancer. She herself, when she described her work in discovering and then isolating radium, emphasized the dedication and hard physical toil rather than the important scientific ideas upon which the work was premised. But on reflection, her work and her association with the search for a cancer cure were far less important than her critical insight that radioactivity was an “atomic property” of her newly discovered elements. It was this idea, put forth almost one hundred years ago, which led to our modern understanding of the structure of the atom. Just as my biography provides new evidence of the range of emotions Marie Curie experienced in her personal life, it also demonstrates, through a detailed examination of her discovery of radioactivity, that her success as a scientist depended not just on her dedication but also on her intellectual clarity. A great life and a great book. Recommended.