The present invention provides considerations about capitalism (having a limit to expansive reproduction), socialism (incompetent, having no plan for future) and religionism (not worth discussing and failed to solve the problem of living on). Capital always wants profit, but there is a limited opportunity for obtaining profits. That′s because there is a limit to the speed of technology development, there is a limit to the ability of human resources to accommodate technology, there is a limit to the environment in which technology is applied, it is difficult to exchange and cooperate under this unlimited competition, and there are many redundant costs required under this unlimited competition. When it comes to socialism (incompetent, having no plan for future), socialism may be better than capitalism. Based on capitalism, the only thing to do is make exchange and cooperation and exchange resources by further adopting capitalism. However, socialism has failed to do so and thus is incompetent. An economic integration among capitalism, socialism and religionism may be achieved only by the common good in this global village.