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.

科学是一项集体事业，每个世纪都为其添砖加瓦。

能源转型不仅是挑战，更是发展的机遇。

言辞不仅可以用来描述现实，还可以用来创造新的现实。

I’m a very positive thinker, and I think that is what helps me the most in difficult moments.

恐惧无时无刻地在我们耳边窃窃私语、在我们眼前高声呐喊；而信念必须由你们每天在镜中看到的自己培养。前者总是紧追在我们身后、纠缠不休、令我们停滞不前；后者则激励我们、带给我们惊喜、刺激我们的创造力、驱使我们不断地前进。

作家唯一的责任就是对他的艺术负责。如果他是优秀的作家，他会完全无情。他有一个梦想。这让他非常痛苦，他必须摆脱它。在此之前，他无法安宁。

To understand a program you must become both the machine and the program.