A monk was making a pilgrimage across Asia. One day, he saw a very old man sitting by a river. Suddenly, the old man arose with a leap. "Aha!" the man said, "After fifty years of meditation I have divined the secrets of levitation." The old man rose off the ground, floated across the river, and landed on the other side.
"What a waste of fifty years," the monk said. He proceeded to board the ferry.