A rabbi, whose grandfather had been a disciple of the Ba'al Shem, was asked to tell a story. "A story," he said, "must be told in such a way that it constitutes help in itself."
And he told: "My grandfather was lame. Once they asked him to tell a story about his teacher. And he related how the holy Ba'al Shem used to hop and dance while he prayed. My grandfather rose as he spoke, and he was so swept away by his story that he himself began to hop and dance to show how the master had done. From that hour he was cured of his lameness. That's the way to tell a story!"