The nature of cooperation

Yesterday night, a friend told that people usually cooperate well with an new comer or unfamiliar person rather than an intimate neighbor. It reminded me of one Korean proverb : I am jealous of neighbor´s success or An envious man waxes with the fatness of his neighbor. The more we appreciate these witty remarks, the more we are disappointed with selfishness of human being. So, some people tend to be pessimistic about a cooperative attitude between A & B. If we always have a competitive spirit to the core, is cooperating just false?

Another friend had an answer. His view point is very clear and accurate. He announced that we should accept the jealousy within people. However, since we are based on a sense of selfishness, we try to maintain the peaceful achievement. Because,we do not want to harm the job or the relationship we are related to. And he said it will open the way to a cooperation.

I think second friend also took a gloomy view about people. But he has an ability to transform the blue idea into the desirable one.