The attempt is made here to provide an approximation of the number of people that the world can support in the light of three constraints: (a) provision for a standard of living adequate for the health and well-being of everyone, (b) consideration for wildlife and Nature, and (c) reliance on existing levels of technology and politics. In fact, two alternative standards of living are suggested, ‘affluent’ (based on the standard of the 27 richest nations in the world) and ‘austere’ (based on the standard of the 43 next most wealthy nations in the world).

中文翻译：

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平衡的世界

此处试图根据三个限制条件提供世界可以支持的人口数量的近似值：(a) 为每个人的健康和福祉提供足够的生活标准，(b) 考虑野生动物和自然，以及 (c) 对现有技术和政治水平的依赖。事实上，提出了两种可供选择的生活标准，“富裕”（基于世界上最富有的 27 个国家的标准）和“严峻”（基于世界上最富有的 43 个国家的标准）。