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.

努力和毅力是克服任何挑战的关键。

我对与任何人竞争都不感兴趣。我希望我们都成功。

I don't make music for the charts. I make music for the people.

Teaching is the most glorious profession under the sun.

精神生活是一系列适应性的实验。