The difficulty with reading Machiavelli today is that we all think we already know what he knows and that is false.

今日阅读马奇亚维利的困难点,在于我们都认为我们早已知道,他所知道的东西，但那并不正确。

耶鲁公开课 - 政治哲学导论课程节选

We know that charge is equal to the integral of current times the time. And he knows the current, he knows how much time and then he weighs this.

我们知道电量等于电流,对时间的积分，他知道电流，他也知道时间，然后他测量这个。

麻省理工公开课 - 固态化学导论课程节选

But Ale does not know that Kaj knows that he is wearing a blue, a pink hat, and Kaj does not know that Ale knows that Kaj is wearing a pink hat.

但艾尔不知道卡佳知道他戴着粉色帽子,卡佳也不知道艾尔知道,卡佳戴着粉色帽子

耶鲁公开课 - 博弈论课程节选