"To counter terrorism, and I'm talking about terrorism writ large,extremism, requires more than just your special mission unit forces.

VOA: standard.2009.09.23

And what struck me most about conversations that I had, either in Leverett or other houses, were students is their sense of mission,your sense of mission, your desire to do good, to make the world a better place.

在与学生的交谈中，让我印象最深的是，无论是在莱弗里特宿舍或其他地方，学生们的使命感，你们的使命感，你们对成功的渴望，让世界变得更美好的愿望。

哈佛公开课 - 幸福课课程节选