死者总是与我们同在，我们也总是与他们同在。

矿工的安全永远不应该用成本效益分析来衡量。

I think that life is a gift and that it is important to take advantage of every moment.

一个文明的真正衡量标准是它如何对待最弱的成员。

Perhaps as important is the relation between the existence of solutions to a competitive equilibrium and the problems of normative or welfare economics.

逻辑学的研究是关于正确推理原则的研究。