Dog was crossing a plank bridge over a stream with a piece of meat in his mouth, when he happened to see his own reflection in the water. He thought it was another Dog with a piece of meat twice as big, so he let go his own, and flew at the other Dog to get the larger piece. But, of course, all that happened was that he got neither: for one was only a Shadow, and the other was carried away by the current.
If you grasp at the shadow, you may lose the substance.
