A Simple black lead pencil bore the inscription, "Half the pressure, twice the speed. " A clever maxim, mused the observer, but what is pressure and whence the speed? In the Christian Science textbook, "Science and Health with Key to the Scriptures," Mary Baker Eddy pertinently asks the following question ( p.
Log in to read this article
Not a subscriber to JSH-Online? Subscribe today and receive online access to The Christian Science Journal, Sentinel, and Herald including digital editions of the print periodicals, Web original articles, blogs, and podcasts, over 30,000 minutes of Sentinel Radio and audio chats, searchable archive going back to 1883! Learn More.