A boy tending sheep on a lonely mountainside thinks it a fine joke to cry "wolf" and watch the people come running--and then one day a wolf is really there, but no one answers his call. Focuses on the meaning of sincerity.
This book has scarred me. It has given me a complex. This book could very well be the reason why I am such a pathetic bullshitter, and why I am incapable of lying.
My elementary teachers used to use this to scare us into telling the truth.