释义:日月依天而行,百谷草木依附地而生存。
【译文】知心的话只能说给知心人来听,不是知心人就不要和他谈。
You don't have to be a person that's always with somebody to be happy. You can be happy alone.
在数学中,最简单的解释往往是最深刻的。