数学之美在于它能够如此精确地描述宇宙。

The essence of computational thinking is abstraction and automation.

喜欢美女和追求富贵的人，不管别人如何都努力去做。而义，是天下的大事，何必先看别人再努力去做呢？ 

I have a vivid memory of what happened， and it was not what I expected. I expected to be applauded for my cleverness and arithmetic skills. "Jeff， you're so smart. You had to have made some tricky estimates， figure out the number of minutes in a year and do some division." That's not what happened. Instead， my grandmother burst into tears. I sat in the backseat and did not know what to do. While my grandmother sat crying， my grandfather， who had been driving in silence， pulled over onto the shoulder of the highway. He got out of the car and came around and opened my door and waited for me to follow. Was I in trouble？ My grandfather was a highly intelligent， quiet man. He had never said a harsh word to me， and maybe this was to be the first time？ Or maybe he would ask that I get back in the car and apologize to my grandmother. I had no experience in this realm with my grandparents and no way to gauge what the consequences might be. We stopped beside the trailer. My grandfather looked at me， and after a bit of silence， he gently and calmly said， "Jeff， one day you'll understand that it's harder to be kind than clever."

《诗经》说：“茂盛的桃树开着鲜艳的花朵，这位姑娘出嫁了，能与婆家和睦相处。”

不肖：品行不好，不正派。观察他所交往的是些什么人，就能看出他是品德好的人还是不正派的人。