The Giant Tortoise's Golden Rule

Once there was a man who lived in Buenos Aires and was a friend of the superintendent of the Zoo. This man had a very happy life, because he worked hard and enjoyed good health. But one day he fell ill, and the doctors told him he would never get well unless he left town and went to live in the country where there was good air and a warm climate. The man could not think of such a thing, however. He had five little brothers, and both his parents were dead. He had to provide the little boys with food and clothes, and get them ready for school in the morning. Who would care for them, if he went away? So he kept on with his work and his illness grew worse and worse.

One day a man from the Zoo met him on the street and said: