[伊索寓言] 狼来了

The Shepherd Boy and the Wolf 

A shepherd boy, who tended his flock(羊群) not far from a village, used to amuse himself at times by crying out“Wolf! Wolf!”...

One day the wolf really did come, and the boy cried out in earnest(真心的、认真的)...Consequently, the sheep were left at the mercy of the wolf.

Even when liars tell the truth, they are never believed.