"The greatest glory in living lies not in never falling, but in rising every time we fall."

Hard work, under the old system, meant long hours, little rest, and poor pay. Under the new system, it means a fair day's work for a fair day's pay.

研究古DNA就是与逝者对话。

我们开采的每一块煤都在为某个家庭点亮灯光。

数学家研究纯数学不是因为它有用；他研究它是因为他喜欢它，他喜欢它是因为它美丽。