EVEN in these days of automation it would be agreed that nothing from the simplest gesture to the most complicated invention could exist without thought's conceiving and directing it. Accepting this premise, one naturally concludes that the nature of his experience depends upon the activity and quality of his thinking.
Of the man who meditates upon God's law, the Psalmist has written (Ps. 1:3), "He shall be like a tree planted by the rivers of water, that bringeth forth his fruit in his season; his leaf also shall not wither; and whatsoever he doeth shall prosper."
Many people have proved the truth of this statement and have been guided and protected through prayerful thinking in ways that have often been considered miraculous. It remained for Mary Baker Eddy to give to the world the scientific means through which men can keep their thoughts and actions under God's constant control.