For the sake of survival, he learned to use everything on the island to eat. Even in an effort to protect himself, he managed to build a hut for shelter.
For months he survive without the help of anyone.
One day, while returning from hunting, he found his cabin on fire. With the fate of weakness he complained.
However, it turns it from there came to her aid: the smoke from the burning hut to mark the arrival of the ship rescuers.
That is one of the unique way in maintaining human nature.