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出自北齊·顏之推《顏氏家訓(xùn)·勉學(xué)》。博士：指學(xué)識淵博的人。一個學(xué)識淵博的人打算去買一頭驢，可是寫了三頁紙也沒有見到一個“驢”字。這句話常用來諷刺文章文辭繁冗、不得要領(lǐng)、蒼白空洞。

I think it's very important to have a feedback loop, where you're constantly thinking about what you've done and how you could be doing it better.

You cannot get through a single day without having an impact on the world around you. What you do makes a difference, and you have to decide what kind of difference you want to make.