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。

智慧是洞悉爱和争斗在宇宙中作用的关键。

Every setback is a setup for a comeback.

Friends can come and go, but banners hang forever.

I don't like favors； they oppress and make me fell like a slave.I'd rather do everything for myself，and be perfectly independent.

故事就是光。在如此黑暗的世界里，光弥足珍贵。

Innovation in forestry begins with respecting traditional wisdom.