The practice of Christian Science starts with the facts of true being: the truth of God, which is His allness; the truth of man, which is his perfection as God's idea; and the truth about evil, which is its nothingness. Thought based on these facts is not easily swayed by suggestions of the presence of something besides the allness of God, the perfection of man, and the nothingness of evil.
In Science and Health, Mrs. Eddy says, "For right reasoning there should be but one fact before the thought, namely, spiritual existence." Science and Health, p. 492 Any problem which presents itself to us is a temptation to turn from right reasoning to the illusion that there is a power apart from God. A problem is just our own belief that there is evil plus our consent to the world's belief that there is evil. Then our work of dealing with the problem is not to examine the symptoms or to stay on the same mental plane with the evil beliefs and try to outargue them but to rise to the true facts of being and hold steadfastly to them. Our scientific work is to keep these facts before us and to realize that the evidence of discord is merely an illusion. In Revelation we read, "I saw another mighty angel come down from heaven, clothed with a cloud: and a rainbow was upon his head, and his face was as it were the sun, and his feet as pillars of fire: and he had in his hand a little book open: and he set his right foot upon the sea, and his left foot on the earth." Rev. 10:1, 2
In explanation of this Bible reference our Leader writes: "This angel had in his hand 'a little book,' open for all to read and understand. Did this same book contain the revelation of divine Science, the 'right foot' or dominant power of which was upon the sea,—upon elementary, latent error, the source of all error's visible forms? The angel's left foot was upon the earth; that is, a secondary power was exercised upon visible error and audible sin." Science and Health, p. 559