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。

You see, in life, lots of people know what to do, but few people actually do what they know. Knowing is not enough! You must take action.

The Vietnamese people deeply love independence, freedom, and peace. But in the face of a threat to their country's independence and freedom, the Vietnamese people would rather sacrifice everything to defend their homeland.

There is nothing which I dread so much as a division of the republic into two great parties, each arranged under its leader, and concerting measures in opposition to each other.

Every challenge is an opportunity in disguise.