"You can't just preach lofty goals and wait for somebody else to act.

VOA: standard.2009.09.23

Act for them, to them. Don't act as if they are just some bunch of Philistines out there who can't appreciate your art.

为他们表演，想他们表演，不要把它们当做俗气的人,所以不能欣赏你们的艺术。

耶鲁公开课 - 1945年后的美国小说课程节选

But what I'm trying to get at is do you consider that you are under no obligation, since you haven't actually entered into any act of consent, but for prudential reasons, you do what you're supposed to do according to the law?

但我想知道的是，你认为自己,不负有任何义务，因为你并未真正作出任何形式的同意，只是出于谨慎考虑，你还是会依法缴税，是吗？

耶鲁公开课 - 公正课程节选

You could use a sign language thing for "Drink" that looks sort of like the act of drinking but you can't use a sign language word for "Country" that looks like a country, or for "Idea" that looks like an idea.

你可以用看起来像喝这个动作的手语,来表示"喝",但你无法用看起来像国家的手语,来表示"国家",或用看起来像想法的手语来表示"想法"

耶鲁公开课 - 心理学导论课程节选