奥巴马在斯坦福大学的主题演讲：虚假信息是对民主的威胁
The handwritten sign was a tool. TV’s a tool. The Internet is a tool. Social media is a tool. At the end of the day, tools don’t control us. We control them, and we can remake them. It’s up to each of us to decide what we value, and then use the tools we’ve been given to advance those values.
