"God is a Spirit: and they that worship him must worship him in spirit and in truth" (John 4:24). To worship means to venerate and adore. Notice how the Scriptures link those two important words, spirit and truth. As used in Christian Science, when capitalized, they are both synonyms of God, and thus it can be logically stated that whatever is spiritual is true and whatever is true is spiritual.
Spirit is the only substance of the universe, the only intelligence. It is the sole basis for true Science. Hence we have Mary Baker Eddy's arresting statement in her textbook, "Science and Health with Key to the Scriptures" (p. 207): "The spiritual reality is the scientific fact in all things. The spiritual fact, repeated in the action of man and the whole universe, is harmonious and is the ideal of Truth. Spiritual facts are not inverted; the opposite discord, which bears no resemblance to spirituality, is not real."
In human experience the agelong conflict between science and religion has turned upon the point that the material senses deny what spiritual sense reveals as true. The world of material sense, with its god of matter, rests entirely upon the evidence of the physical senses and is therefore variable, changing, and unsubstantial. Therein is no fixed Principle, and therefore no real Science, for all evidence is secured inductively through material sense experience, and from this is built up a belief of law, simply because under like circumstances a number of mortals testify to a common result. It is very similar to a rumor, which, when accepted by a number of people, is soon regarded as a fact.