Nature is the best teacher.

农业效率不是用更少做更多，而是用现有资源做得更好。

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.

Words and actions should be consistent; honesty is the best expression of faith.

我能做的就是做我自己，不管那是谁

The discovery of topological insulators has opened up a new frontier in condensed matter physics, where the interplay between topology and symmetry leads to novel quantum states of matter.

商业中的每一个挑战都是创新和改进的机会。