What Is Sustainable Development?
提出两条公理来刻画可持续发展思想，并推导出相应的福利准则。公理要求现在和未来都不能在社会跨期选择中扮演独裁角色。定理1和2证明了存在满足这些公理的可持续偏好并给出完整刻画。定理3-5研究可再生资源经济的标准动态系统，给出转向定理，并展示可持续最优与贴现功利主义最优的差异。
This paper introduces two axioms that capture the idea of sustainable development, and characterizes the welfare criterion that they imply. The axioms require that neither the present nor the future should play a dictatorial role in society's choices over time. Theorems 1 and 2 show there exist sustainable preferences which satisfy these axioms and provide a full characterization. Theorems 3-5 study a standard dynamical system representing the growth of a renewable-resource economy, give a turnpike theorem, and exhibit the differences between sustainable optima and the ones according to discounted utilitarianism.