In the ancient times people knew that each creature in nature has its strengths and weaknesses. That's why we have such a saying, "A foot may sometimes prove short while an inch may prove long." However, things are quite different in actual life.

On the social scales those at lower level envy those on the higher, especially in regard of riches. It is not rare now that a millionaire pops up overnight. What is visible to the public is the harvesting, not the plowing. The rapid development of information technique has made it possible to change ways and means of gathering riches so that they became vague and complicated, no longer familiar to the public eye. Thus it is easy for envy to turn into jealousy, especially when people witness those around them suddenly became rich. Inevitably they will be greatly affected by jealousy. They will complain, blame others and curse fate.

Envy-jealousy-hate shows up a clear picture of the escalation of a person's feelings. Nowadays in either officialdom, academic circles or business world competitions are becoming fiercer and fiercer. The cruelty of competitions is being felt deeper and deeper by those who are not accustomed to it. It makes people nervous who have relaxed for many years. Those who are quiet at a loss will certainly be caught in the net of envy-jealousy-hate.

It's much better for one to reconcile oneself to the status quo or exert oneself to catch up than fall a victim to envy-jealousy-hate. Why? Because the ancient already had a wise summary: things all have two opposites that are mutual complementary: "Pure-impure; large-small; long-short; rapid-slow; joy-sorrow; hard-soft; early-late; meticulous-sketchy etc.," all these do not deny or vanquish each other; they co-exist and complement each other.