In an article by Paul Stark Seeley entitled “Our Father’s Demand – Unself Mortality,” he observes that the word “must” is not in the Concordances to Mary Baker. Eddy’s writings. But Mrs. Eddy uses it four hundred and thirty times in Science and Health alone. Mr. Seeley remarks. “She uses it to define precisely what we can do to dispose of mortality.” This Concordance to the word “must” includes a listing of the word in all of Mrs. Eddy’s published writings: Science and Health with Key to the Scriptures, Prose Works, and The Manual of The Mother Church.