translation.en: And it was also the beginning of our discontent, because if you wanted to distill all of our experience since the Paleolithic, it would come down to two words: how and why.
translation.zh: 并且，这是人类不满的开始， 因为当你想获得人类的经验 自从旧石器时代，可以得到两个词： 怎么样以及为什么。