没有食物，人类最多只能活几个星期；没有它，社会正义的所有其他组成部分都毫无意义。

If one only wished to be happy, this could be easily accomplished; but we wish to be happier than other people, and this is always difficult, for we believe others to be happier than they are.

有时最简单的旋律承载着最深刻的情感。

煤炭开采的创新不仅仅是技术问题，更是思维方式的转变。

成功不在于你赚了多少钱，而在于你对人们生活的影响。