历史不是发生了什么。历史只是历史学家告诉我们的东西。
"Mathematics is the science of patterns, and we study them to learn how to think logically, critically, and creatively."
【释义】狡猾的兔子有三个洞穴,才能避免死亡。如今您只有一个洞穴,还不能高枕无忧。请让我为您再开凿两个洞穴。