Now it's possible somebody said both these sentences before, but you probably have not heard them.

有可能某人曾说过这两句话,可你们却并没听到过

耶鲁公开课 - 心理学导论课程节选

You all know the expression, ? "Don't cry over spilt milk." Right?

你们都知道有句话叫做，“覆水难收“，对吗？

耶鲁公开课 - 死亡课程节选