我认为英雄是那些明白自由伴随着责任的人。
I think of a hero as someone who understands the degree of responsibility that comes with his freedom.
The ultimate tragedy is not the oppression and cruelty by the bad people but the silence over that by the good people.
"Leadership is about making others better as a result of your presence and making sure that impact lasts in your absence."
科学上的每一项伟大发现之前都有一些准备工作，往往持续多年。
数学之美不仅在于其抽象的优雅，还在于其建模和解决现实世界问题的深刻能力。
The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.