The idea is that for any amount of money-- if this x is the amount of money that I receive-- utility as the function of the amount of money I receive is downwardly-concave.

这种观点是对于任何数量的货币,假设我得到x数量的货币,随着货币的增加,边际效用呈,向下凹进去的曲线

耶鲁公开课 - 金融市场课程节选

Any want or a satisfaction which exists exists in some amount and is therefore measurable.

任何需求或满足，都能有个价钱,因此能用金钱衡量。

耶鲁公开课 - 公正课程节选