We add up the goods, subtract the bads-- whatever our favorite list is-- and we come to our best educated guess about the rival evaluations of not just lives as a whole, but chunks of lives.

我们把好事加起来减去坏事-,不管我们最喜欢哪些事-,我们不但可以据理推测,一生期间其他生活的价值，还能推测某段时间其他生活的价值。

耶鲁公开课 - 死亡课程节选