When you do something best in life, you don’t really want to give that up – and for me it’s tennis.

词语有重量，而故事有引力。

我们必须对变革的速度保持现实态度。即使我们投资于低碳解决方案，世界在未来几十年仍将需要石油和天然气。

Duty is the most sublime word in our language. Do your duty in all things. You cannot do more. You should never wish to do less.

一个科学家的真正价值是由超越他的学生数量来衡量的。

The interplay between local and global phenomena is a recurring theme in number theory.

金融的本质是服务实体经济。