And when his audience grew bored, he would spring into the air and do a back flip with a half twist.

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.

如果你不冒险，你永远不知道自己能取得什么成就。

自己有善德，才能要求别人行善。

关键是享受过程，而不仅仅是结果。