努力和毅力是克服任何挑战的关键。
Hard work and perseverance are the keys to overcoming any challenge.
释义：要了解过去和现在，以便灵活应变，适应变化。
如果没有经历寒冷的冬天，就不知道松柏的坚韧挺拔；没有经历过危难的事情，就不知道君子志向的远大。
The interest of the behaviorist in man's doings is more than the interest of the spectator—he wants to control man's reactions as physical scientists want to control and manipulate other natural phenomena.
故事是作者写给自己的信，用来告诉自己那些无法通过其他方式发现的事。
The most real thing that human beings can touch is the silence in loneliness.