想象力是一块肌肉。如果不锻炼，它就会萎缩。
The imagination is a muscle. If it is not exercised, it atrophies.
The essence of a free government consists in an effectual control of rivalries.
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.
我不逃避挑战，我奔向挑战。
"The speed of learning is the only sustainable competitive advantage in today's world."
Keep dreaming, keep creating.
Always do sober what you said you'd do drunk. That will teach you to keep your mouth shut.
