When he arrived at , saw an old woman walking slowly toward him, leaning on a staff. Her back was bent. Her hair was white. Her arms and hands were bony. "Old grandmother, I have come to kill you," he said. "I do you no harm, grandson," she replied. "Think it over before you kill me. Once the people discover that will no longer slowly sap their strength with the passing of years and finally devour them, they will have no children. It is better that people should pass on their wisdom and responsibilities to those who are younger, and finally die." "I will spare you," replied . And he returned without a trophy.