Illustration: One day a small boy was trying to lift a heavy stone, but he couldn’t budge it. His father, passing by, stopped to watch his efforts. Finally he said to his son: “Are you using all your strength?’

“Yes, I am,” the boy cried, exasperated.

“No,” the father said calmly, “You’re not. You have not asked me to help you.” The child needed to learn to depend upon his father, as an added source of strength.