For millions of Americans, this weekend is a time to celebrate redemption（赎回，拯救） at God's hand. Tonight, Jews will gather for a second Seder, where they will retell the story of the Exodus. And tomorr

Hi everybody. I'm speaking with you from the DC Public Library in Anacostia, where I just met with a group of promising middle school students. We spent some time talking about their lives, and how we

Consider briefly an important source of aesthetic pleasure, the magnetic pull of beautiful landscapes. 想一下简单且重要的审美愉悦的来源，美丽风景的吸引力。 People in very different cultures all over the world tend to like a pa

So at the end of my first year at Harvard, a student who had not talked in class the entire semester, who I had said, 所以我在哈佛的第一年结束的时候，我对整个学期在课堂上都没有说话的一个学生说: "Look, you've gotta participate or else you

So, to summarize, the idea is this: 所以，总结来说，观点是： As our world becomes increasingly instrumented 当我们的世界变得越来越工具化 and we have the capabilities to collect and connect the dots 我们有能力搜集和链接一个一个小点 between wha