_Science and Health_ is a book consisting largely of extraordinary claims put forth with the most provoking indifference to the universally accepted rules of evidence, and with an abandon suggesting that of the steed who has thrown his rider. If her readers ask for proofs, she points to the authority of her name. Has she not received a revelation? Is she not "the Comforter" whom Jesus promised to send into the world? And if there are obscure passages in her writings, it is not because these are really "dark," but because there is not enough light in the eyes of the readers of her books. This free-and-easy method carries her through seven hundred pages of her "masterpiece," _Science and Health_, without encountering the least obstacle or being checked for an instant by a single difficulty. Writing was like play to her, and sentences and phrases flow copiously and swell into a veritable flood in her pages, because what satisfied her was that she could say so much, and not whether what she said had any basis in fact. In the Preface to _Science and Health_, Mrs. Eddy, in order to prove the usefulness of medical knowledge, quotes the example of the antediluvians who knew nothing of drugs, and yet some of whom lived to be nearly a thousand years old. Mrs. Eddy makes this statement with as little concern as a boy tosses a ball. The reasoning that men were healthier and lived longer before the Deluge because there were then no physicians, whose presence in our times has shortened human life, may do for the "child-mind," but is it permitted to a full-grown person to make such careless use of his or her faculties? How does Mrs. Eddy know that the antediluvians would not have lived longer if they could also have had the services of trained and skilful physicians? It would be just as reasonable to assert that there would have been no Deluge had there been doctors to prevent it, as to say that the antediluvians owed their longevity to the lack of them. Without caring to make sure of her data, or to look into the truth of the statement that there was a flood, or that before this terrible downpour men lived to be a thousand years old, Mrs. Eddy accepts the rumour of the tradition as if it were a demonstrated fact, and proves by it, to her own satisfaction at least, the utter uselessness and positive menace to the human race of medical science. What an argument and what a conclusion!