The most profound ideas in mathematics often arise from the simplest observations.
数学中最深刻的思想往往源于最简单的观察。
领导力不是掌控，而是照顾你负责的人。
出自《庄子·大宗师》，天蚕土豆在作品中引用
You are never too old to set another goal or to dream a new dream.
The best way to find yourself is to lose yourself in the service of others.
I define nothing. Not beauty, not patriotism. I take each as it comes, and I leave it as it goes.