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.

有时我会感到，我伸展开来覆盖大地、延伸进万物：我感到自己生活在每一棵树木中、生活在浪花中、生活在往来无定的云朵和动物中、生活在季节的轮回中。

谦逊是科学家所能拥有的最大美德。

物理理论的美在于它能够统一看似无关的现象。

我热爱竞争。这就是我的工作。这就是我如此努力的原因。

Evil is whatever distracts.

在白天对什么都不动感情是极为容易的， 但在夜晚就是另外一回事。