出自北齐·颜之推《颜氏家训·勉学》。博士：指学识渊博的人。一个学识渊博的人打算去买一头驴，可是写了三页纸也没有见到一个“驴”字。这句话常用来讽刺文章文辞繁冗、不得要领、苍白空洞。
When you live for others' opinions, you are dead.
Understanding the limits of computation requires a deep dive into the mathematical foundations that underpin algorithmic complexity.
You'll never have a quiet world till you knock the patriotism out of the human race.
An ounce of practice is worth more than tons of preaching.
负责任的林业不是一种选择，而是我们所有人的义务。