In the case of most people, however, ignorant of the forces of the invisible worlds and unaccustomed to exercise their wills, the concentration of mind and the earnest desire which are necessary for successful action are far more easily reached by prayer than by a deliberate mental effort to put forth their own strength. They would doubt their own power, even if they understood the theory, and doubt is fatal to the exercise of the will. That the person who prays does not understand the machinery he sets going in no wise affects the result. A child who stretches out his hand and grasps an object need not understand anything of the working of the muscles, nor of the electrical and chemical changes set up by the movement in muscles and nerves, nor need he elaborately calculate the distance of the object by measuring the angle made by the optic axes; he wills to take hold of the thing he wants, and the apparatus of his body obeys his will though he does not even know of its existence. So is it with the man who prays, unknowing of the creative force of his thought, of the living creature he has sent out to do his bidding. He acts as unconsciously as the child, and like the child grasps what he wants. In both cases God is equally the primal Agent, all power being from Him; in both cases the actual work is done by the apparatus provided by His laws. But this is not the only way in which prayers of this class are answered. Some one temporarily out of the physical body and at work in the invisible worlds, or a passing Angel, may hear the cry for help, and may then put the thought of sending the required aid into the brain of some charitable person. "The thought of so-and-so came into my head this morning," such a person will say. "I daresay a cheque would be useful to him." Very many prayers are answered in this way, the link between the need and the supply being some invisible Intelligence. Herein is part of the ministry of the lower Angels, and they will thus supply personal necessities, as well as bring aid to charitable undertakings.