A clarion
call to every Christian Scientist, specific, direct, and unmistakable in its meaning, is found on page 417 of the Christian Science textbook, "Science and Health with Key to the Scriptures," where its author, Mary Baker Eddy, writes: "Maintain the facts of Christian Science,—that Spirit is God, and therefore cannot be sick; that what is termed matter cannot be sick; that all causation is Mind, acting through spiritual law.