The book in its final form represents a considerable evolution. The comparison of successive editions reveals an astonishing amount of matter which has been discarded, although there has been no real modification of its fundamental principles. References to malicious animal magnetism which fill a large place in the earlier editions, are almost wholly wanting in the last, and there has been a decided progress toward a relative simplicity of statements. The book is doubtless much in debt to Mrs. Eddy's literary adviser, Mr. Wiggins, who brought to the revision of Mrs. Eddy's writings a conscientious fidelity. One needs to stand a good ways back from the book itself in order at all to get any balanced view of its philosophy but, so seen, its fundamentals are almost unexpectedly simple. _Christian Science a Philosophy, a Theology, a Religion and a System of Healing; General Conditions Which Have Lent it Power_ Christian Science is offered as a philosophy, a theology, a religion and a method for the practical conduct of life and it needs to be considered under each of these four heads. It demands also for any proper understanding of it the backgrounds of Mrs. Eddy's peculiar temperament and checkered history. It is a growth. For her fundamentals Mrs. Eddy is, beyond reasonable debate, in debt to Quimby and in some ways Quimby's original insights have suffered at her hands. None the less, in its final form "Science and Health" is what Mrs. Eddy has made it and it is what it is because she was what she was. She shared with her own generation an absorbing interest in fundamental theological problems. She inherited a religion which has reduced the whole of life to rigid and on the whole too narrow theological formulae. She was not able to fit her experience into the formula which her faith supplied and yet, on the other hand, her faith exercised a controlling influence over her life. She was in a small and pathetic way a kind of nineteenth century Job grappling with the old, old question given sin and, above all, pain and suffering to find God. She could not adjust either Divine love or a just Divine sovereignty to what she herself had been called upon to bear. A natural tendency toward the occult and the desperate willingness of the hopelessly sick to try anything which promises a cure, led her in many directions. So much her biography explains.