Maarch 10
I know that, whatsoever God doeth, it shall be for ever: nothing can be put to it, nor any thing taken from it: and God doeth it, that men should fear before him.
Substance is that which is eternal and incapable of discord and decay. Spirit, the synonym of Mind, Soul, or God, is the only real substance
S&H with Key to the Scriptures, by Mary Baker Eddy, page