人类对经济发展和增长的追求是无限的,而地球自然环境对人类的经济活动提供支持的能力是有限的；人类对社会财富公正分配的追求是无限的,而任何一个社会组织分配的能力是有限的。这两个基本矛盾伴随着人类社会发展的全过程。自然资源不断耗竭,生态环境日益恶化,贫富差距迅速扩大,形成了在全世界范围被普遍认同的三大危机。 The human pursuit of economic development and growth is limitless, and the ability of the Earth’s natural environment to support human economic activities is limited; the human pursuit of just distribution of social wealth is unlimited, and the ability of any social organization to allocate is limited. These two basic contradictions accompany the entire process of human social development. The continuous depletion of natural resources, the deteriorating ecological environment, and the rapid expansion of the gap between the rich and the poor have created three major crises that are universally recognized throughout the world.