The greatest threat to our planet is the belief that someone else will save it.

现代生活的最大悲剧是我们拥有我们想要的一切，但没有我们需要的东西。

I'm not a rapper, I'm a fashion icon.

True leaders are not those who give orders, but those who can inspire others to follow voluntarily.

生活的成功意味着做那件对你来说最珍贵的事。

我们必须拥抱新技术和新理念，否则将在快速变化的能源格局中落后。

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.