The Goose That Laid Golden Eggs - Part I

Aesop's Fable
A man and his wife had the good fortune to possess a goose which laid a golden egg every day. Lucky though they were, they soon began to think they were not getting rich fast enough, and, imagining the bird must be made of gold inside, they decided to kill it in order to secure the whole store of precious metal at once. But when they cut it open they found it was just like any other goose. Thus,they neither got rich all at once, as they had hoped, nor enjoyed any longer the daily addition to their wealth.
The Morals
Much wants more yet often loses all.
Greed destroys the source of good.
Think before you act.

In the English language, "Killing the golden goose" has become a metaphor for any short-sighted action that may bring an immediate reward, but will ultimately prove disastrous.

Part II and Part III to follow.