This book contains a detailed and insightful biography of Mary Baker Eddy. Mary Baker Eddy (1821-1910) was the founder of the nineteenth-century movement called Christian Science. She devised the movement's textbook, "Science and Health with Key to the Scriptures" (1875), and founded the Church of Christ, Scientist in 1879. Eddy was also the founder of the Christian Science Publishing Society. This volume constitutes a detailed exploration of Eddy's life and work, and is not to be missed by those with an interest in the history Christian Science. Many vintage texts such as this are becoming increasingly rare and expensive, and it is with this in mind that we are republishing this volume now, in an affordable, modern, high-quality edition. It comes complete with a specially commissioned new biography of the author.