Krilof and His Fables/The Gnat and the Shepherd
The Gnat and the Shepherd.
Having confided his sheep to the care of his dogs, a Shepherd went to sleep in tire shade. Remarking that, a snake glided towards him from under the bushes, brandishing its forked tongue. The Shepherd would have passed away from the world, had not a Gnat taken pity on him, and stung him with all its might. Roused from his slumber, the Shepherd killed the snake. But first, while half awake and half asleep, he hit the Gnat such a slap that the poor thing was utterly done for.
There is no lack of examples of this. If the weak, even with the best intentions, try to open the eyes of the strong, you may expect that they will meet with the same fate as the Gnat.