So given a Time Turner, I would tell my 21-year-old self that personal happiness lies in knowing that life is not a check-list of acquisition or achievement. Your qualifications, your CV, are not your life, though you will meet many people of my age and older who confuse the two. Life is difficult, and complicated, and beyond anyone’s total control, and the humility to know that will enable you to survive its vicissitudes.

生命中最伟大的荣耀不在于从不跌倒，而在于每次跌倒后都能站起来。

画布是色彩为生存而战的战场。

我们不能总是选择我们所面临的问题，但我们总是能够选择对问题的回应。

The deepest theorems often have the simplest proofs - if you look at them from the right angle.

互联网的本质是开放和共享。

个人不再需要决定什么是善或恶；规则已经被给定。