The most important victories are those that come after the hardest defeats.

The choices we make each day—what we buy, what we eat, how we live—all have an impact.

I'm not a celebrity. I'm an activist.

你拥有的最强大的领导力工具就是你自己的榜样。

The greatness of a man is not in how much wealth he acquires, but in his integrity and his ability to affect those around him positively.

一个好的数学家是能看到定理之间类比关系的人。一个伟大的数学家是能看到类比关系之间的类比关系的人。