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.

You cannot step into the same river twice.

成功排在努力前面的唯一地方就是在字典里。

让自己振作起来的最好方法就是试着让别人振作起来。

The future is not something we enter. The future is something we create.

Sustainability isn't an option—it's a necessity if we want to feed a growing population without destroying our planet.