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.

不要担心别人会做什么。预测未来的最好方法就是创造未来。

如果你的工艺危害环境，那你不是在鞣制，而是在掠夺。