What is useful is point to somebody and say, "You in the green sweater, call the police," and the psychological evidence is if you--if somebody's-- if I am wearing the green sweater and somebody asks me to call the police I will call the police. I'm a good guy.

有用的办法是，指着某个人说，“穿绿色毛衣那个人，快报警”,心理学证明如果你…,如果我穿着绿色毛衣,有人叫我报警,我会报警，我是好人。

耶鲁公开课 - 心理学导论课程节选

What kind of college is a good match for a frail, introverted guy like myself?"

身体瘦弱，性格内向的男孩，应报考什么职高专业？“

斯坦福公开课 - 百度CEO李彦宏演讲：全球最大搜索引擎的发展课程节选