Sure, if my son would wake up and I didn't tell him, he wouldn't know that it was duplicate.

当然，如果我儿子醒来,可我还是没告诉他，他不会知道这塔是重新搭的。

耶鲁公开课 - 死亡课程节选

If the person next to you is asleep, gently wake him or her up.

如果你身边的人睡着了，轻轻地把他或她唤醒。

哈佛公开课 - 幸福课课程节选