In the Christian Science textbook, "Science and Health with Key to the Scriptures" (p. 593), Mrs. Eddy defines "rock," in part, as "spiritual foundation." She then gives a material definition, the direct opposite of the spiritual, as "coldness and stubbornness,"—therefore a hindrance to spiritual progress. For a spiritual structure can never be built upon coldness and stubbornness.
The substance of this spiritual foundation is living love, the very nature of God. Jesus said, "Ye shall know the truth, and the truth shall make you free;" and he preached and taught the doctrine of Love, taught men to look away from all material evidence, from all the hardness and stubbornness of material sense, to God's man, the man made in the image of Love, God.
"Therefore thus saith the Lord God, Behold, I lay in Zion for a foundation a stone, a tried stone, a precious corner stone, a sure foundation," we read in Isaiah. But this teaching of the Christ, Truth, is the stone upon which the world at large refuses to build. Instead, it listens to the lie that would whisper continually in its ears that life is hard; that material circumstances are stubborn, and impossible to overcome. The lie tries to insist that life can be checked, buried in a sepulcher, and to put a block of stone, hard and stubborn, before the entrance. But Truth knows no human limitations. It removes the block; or, rather, it shows the unreality of it; and life comes forth glorious for those who have eyes to see.
