矿工的技能和奉献精神与他们带到地面的煤炭一样宝贵。

Sustainability is not an add-on, it's a way of thinking.

The true measure of our success is how we improve global health outcomes.

The architect must design for the future while honoring the past.

我深信遇见的每一个人都有他的意义。

一个人思虑太多，就会失去做人的乐趣。

The natural price of labor is that price which is necessary to enable the laborers, one with another, to subsist and to perpetuate their race, without either increase or diminution.