What is tragedy? tragedy is the conflict of good.

We are all in the gutter, but some of us are looking at the stars.

逃避痛苦的唯一方法是拥抱它。

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.

When you change the way you look at things, the things you look at change.

逆子无情甚于蛇蝎。

The ethical implications of gene editing must be carefully considered as we advance.