In this essay I propose a new measure of social welfare. It captures the intuitive idea that quantity, quality, and equality of individual welfare all matter for social welfare. More precisely, it satisfies six conditions: Equivalence, Dominance, Quality, Strict Monotonicity, Equality and Asymmetry. These state that (i) populations equivalent in individual welfare are equal in social welfare; (ii) a population that dominates another in individual welfare is better; (iii) a population that has a higher average welfare than another population is better, other things being equal; (iv) the addition of a well-faring individual makes a population better, whereas the addition of an ill-faring individual makes a population worse; (v) a population that has a higher degree of equality than another population is better, other things being equal; and (vi) individual illfare matters more for social welfare than individual welfare. By satisfying the six conditions, the measure improves on previously proposed measures, such as the utilitarian Total and Average measures, as well as different kinds of Prioritarian measures.

在这篇文章中，我提出了一种新的社会福利措施。它抓住了直观的想法，数量，质量，和平等个人福利的一切物质的社会福利。更准确地说，它满足六个条件：等价，支配性，质量，严格单调性，相等性和不对称性。这些条件指出：（i）个人福利相等的人口社会福利相等；（ii）在个人福利方面居于主导地位的人口更好；（iii）在其他条件相同的情况下，一个平均福利高于另一个人口的人口更好；（iv）增加一个好吃的人使人口变得更好，而增加一个好吃的人使人口变得更糟；（v）在其他条件相同的情况下，平等程度高于另一种族的人口更好；（vi）个人疾病对社会福利的影响要大于个人福利。通过满足这六个条件，该措施改进了之前提出的措施，例如功利总计和平均措施，以及不同类型的优先措施。