你的树无法摇摆是因为我。

The challenge of the future is not just to store more data, but to make sense of it.

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 most significant threat to liberal democracy today is not from the outside, but from within.