And so, arguably, the fact that life is precious, that it won't endure, could actually increase its value for us.

所以，可以说，生命是珍贵的，它将不再这个事实，事实上可能增加了其对我们来说的价值。

耶鲁公开课 - 死亡课程节选

The thirty-year mortgage came in the early 1950s but it seems to have gotten stuck at thirty-year.

0世纪50年代初出现30年期的贷款,这之后期限不再增加

耶鲁公开课 - 金融市场课程节选