Science and Health with Key to the Scriptures

Strange and frantic and incomprehensible and uninterpretable. Science and Health with Key to the Scriptures, first published in 1875, and written by 19th century spiritual leader Mary Baker Eddy, is the primary source for the theology of Christian Science, laying out its theology of reality-denial, the nonexistence of evil, and the primacy of spirit over matter.

Most of the book is set up in commentary form, somewhat similar to the final form of Blaise Pascal's Pensées, but a large section at the end of the book consists of personal testimonies, mostly of faith healing experiences. Readings from Science and Health are used in lieu of a sermon in church services, according to a schedule set down by Eddy early in the church's history.

The text of the book is in the public domain in the United States due to the 1987 vacating of a 1972 copyright extension granted at the behest of Church of Christ, Scientist members in the Nixon administration. Since the intent of the law that gave a copyright extension specifically to the book was to assist a specific religion, the United States Court of Appeals for the District of Columbia ruled that the law was unconstitutional because it violated the separation of church and state.