Never Kill A Man Who Says Nothing.

African folklore
The mother kite sent her daughter to fetch food. She went and bought back a duckling. “Good job,” said the mother, “but tell me what the duckling’s mother said when you swooped and carried her child?”
Daughter kite said - “I just walked away”
“Return the ducking, there is something ominous behind the silence,” said the mother.

Daughter kite returned the duckling and brought the chick instead.

“What did the mother of this chick do?”- asked the old kite.

“It cried and raved and cursed me,” said the young kite.

“We can eat the chick, there is nothing to fear from someone who shouts,”- said the mother kite.

Moral of the story

Never kill a man who says nothing.

 

I think the message is to keep silent, but never forget to take revenge at the right opportunity.