商业成功的关键不仅仅是满足客户，而是要超越他们的期望。

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.

The Langlands program is a challenge to the boundaries of mathematical knowledge.

解释：阻塞老百姓的嘴，好比阻塞河水。河流如果堵塞后一旦再决堤，伤人一定很多，人民也是这样。不可堵塞民众的言论，不给他们发表自己想法的机会。如这样去做，将比堵塞江河带来的后果更严重。

The best stories don’t talk down to children—they invite them in.

Every seed we plant today is a promise to future generations.

我喜欢画普通人做普通事。