An eagle was flying in the sky. As soon as it saw a rabbit, it swooped down on its prey.
Suddenly it was hit by an arrow.
It fluttered slowly down to the earth, and blood was pouring from the wound.
When the eagle looked down, he found that the shaft of the arrow was feathered with one of its own plumes. “Alas!“ it cried. “We often give our enemies the means for our own destruction.“