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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.

Language is not a cultural artifact that we learn the way we learn to tell time or how the federal government works. Instead, it is a distinct piece of the biological makeup of our brains.

在以情動(dòng)人前,你自己要先被打動(dòng)。在你催人淚下前,你自己要熱淚盈眶。在你以理服人前,你自己要堅(jiān)信不疑。

金錢(qián)可以為你買(mǎi)到愛(ài)。

逃避平凡的唯一方法就是擁抱非凡。

思維的最高追求，也是最高的美德，是通過(guò)直覺(jué)來(lái)理解事物。

I'm not a kid anymore, I'm a young man.

The future of coal is not just about extraction, but about how we integrate it responsibly into a changing energy landscape.