Buddha who had set out to search for truth was so long in finding it that he became discouraged and decided to return home. As he was leaving, he came across a squirrel dipping its tail into thewater of a lake and shaking it over the land.
"Little squirrel," he said. "What are you doing?" "I'm emptying this lake," said the squirrel. "But you will never be able to do that," said Buddha. "If you dipped your tail into the lake a million times, there would still be nearly as much water there as before." "Well," said the squirrel, "I shall still persevere."
Buddha learned the lesson and resolved to continue his search for truth.
Moral: We sometimes need to persevere despite appearances.