真相是，我们在这个世界上都是孤独的。
The truth is that we are all alone in the world.
There’s a kind of beauty in the ordinary, if you take the time to see it.
人生苦短，不能不冒险。
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 real challenge in AI is not just building intelligent machines, but building machines that can learn and adapt."