The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all. And that, of course, causes great confusion.

跳舞吧，就像没有人观看一样；去爱吧，就像从未受过伤害一样。

该称颂的却不称颂，这就是不仁。 

如果开采技术不优先考虑环境可持续性，那么创新就毫无意义。