This was the first time in his life he had heard an echo. He got scared, went to his mother for protection and said there was a bad boy in the valley who shouted "I hate you, I hate you."
The mother understood and she asked her son to go back and shout, "I love you, I love you." The little boy went and shouted, "I love you, I love you," and back came the echo.
That taught the little boy a lesson that our life is like an echo: We get back what we give.
"When you are good to others, you are best to yourself." - Benjamin Franklin