在一个不自由的世界里，唯一的应对方式就是变得如此绝对自由，以至于你的存在本身就是一种反抗。
The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.
最大的风险就是不冒任何风险。
And I hope you will come back here to Harvard 30 years from now and reflect on what you have done with your talent and your energy. I hope you will judge yourselves not on your professional accomplishments alone, but also on how well you have addressed the world's deepest inequities…on how well you treated people a world away who have nothing in common with you but their humanity.
对某事的恐惧是仇恨他人的根源，内心的仇恨最终会摧毁仇恨者。
追求数学知识是一段永无止境的旅程，充满了无尽的好奇和惊奇。
