Well, I can imagine the Evening Star without the Morning Star, so Son of Descartes, "Descarteson," Has to say, "Oh, so that shows that the Morning Star and the Evening Star are two different things."

我可以想象只有晨星存在,而昏星不存在,于是笛卡尔的儿子,笛卡尔森 不得不说,那就说明了晨星和昏星,是两个不一样的东西

耶鲁公开课 - 死亡课程节选