这个世界上充满了自童年以来从未以开放的心态迎接开放之门的人。
The world is full of people who have never, since childhood, met an open doorway with an open heart.
The truth is rarely pure and never simple.
译文:长久治理百姓的人,以道德为屏障。
科学中真正的理解来自于连接看似不相关的点。