出自北齐·颜之推《颜氏家训·勉学》。不得，不能、不可。雌黄，矿物名，可作颜料，古代用以涂改文字，后引申为信口更改、随便乱说。没有读够一定数量的书，对前人的见解没有彻底了解，是不能随便乱下结论、乱发议论的。书要多读、话要谨慎；应当谦虚向学，不可妄自尊大。

The only way to be truly satisfied is to do what you believe is great work.

释义：美好事物之所在，就是受到玷污辱没，世人也不能使它低贱；丑恶事物之所在，就是有人鼓噪吹捧，使之抬高身价，世人也不能使它贵重。

The core of the energy revolution is cleanliness and efficiency, and the coal industry must actively adapt to this trend.

I do not know what a pure point guard is , I just play the game & do whatever is necessary to win even it means I have to be selfish .

【大意】一定要等到西施、毛嫱那样的美女作配偶，那么就终身不能成家了。