The truth is often hidden in the shadows, and it takes courage to find it.

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.

Mathematics is not a careful march down a well-cleared highway, but a journey into a strange wilderness, where the explorers often get lost.

Collaboration across borders and industries is key to solving global food security challenges.

勇气是所有美德中最重要的，因为没有勇气，你就无法始终如一地实践其他美德。