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.

If a writer doesn't generate hostility, he is dead.

成为一个作家就是成为一个永远在寻找真相的人。

在数学中，你并不理解事物。你只是习惯了它们。

真相很残酷。一旦给狗戴上皇冠，就很难给它戴上项圈了。