It has been argued, and I think this is a brilliant point, that the most important word in Paradise Lost is or, the conjunction.

或者广受争议的，我个人认为是出色的一个想法，即中最重要的词就是这个连词，或者。

耶鲁公开课 - 弥尔顿课程节选

You actually have the word "first" appearing six times in the first thirty-three lines of Paradise Lost.

初/先“一词在《失乐园》的,头33行中就出现了6次。

耶鲁公开课 - 弥尔顿课程节选