成功不是终点，失败也非末日，重要的是继续前进的勇气。

进步的艺术是在变革中保持秩序，在秩序中保持变革。

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 best literature is that which challenges us, which makes us think, which forces us to confront the uncomfortable truths of our existence.