Thoughts are active mental forces which mold and fashion our daily experiences, manage our relationships, and bring either harmony or inharmony to the body. Thinking—the art of selecting, entertaining, and utilizing thoughts—guides every endeavor to a successful culmination according to the degree of the Rightness of the thoughts entertained and utilized. And herein is disclosed the value of the study of Christian Science. This study enables us to gain the correct understanding of God as Mind, or intelligence, and of man as the image and likeness of God, the full and complete expression of this Mind. Our understanding of this union makes it possible for all our human experiences, relationships, and bodily conditions to be governed harmoniously.
It is the prerogative of every individual to select the thoughts he wishes to entertain. His thinking is his own domain. It cannot be entered and the thoughts therein changed unless he permits it through indifference or lack of alertness. Since the thoughts he selects will have a direct bearing on his experiences, it seems wise for him to be doubly cautious in making the selection, for it is said of a man "as he thinketh in his heart, so is he" (Prov. 23:7).
The tendency to think evil weakens mental barriers; and without realizing what is occurring, one has yielded his mentality to the forces of erroneous thoughts. Then the mental horizon becomes blurred; thoughts do not adjust themselves properly and cannot be brought into focus upon a given situation.