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.

教育是我们改变水产养殖实践最有力的工具。

That’s one small step for a man, a giant leap for mankind.

最高尚的快乐是理解的喜悦。