That "Spiritus Mundi" that Yeats refers to in "The Second Coming," well, this is Yeats talking about that idea here.

叶芝二次圣临里的宇宙之魂“,叶芝这里在谈这一观点。

耶鲁公开课 - 现代诗歌课程节选

And you remember Yeats in "The Second Coming," - there's a beast that's kind of-- He doesn't know what it is, and here he's saying something similar.

你们记得在二次圣临里“,有提到一只野兽-,他不知道那到底是什么，在此他表达相似的想法。

耶鲁公开课 - 现代诗歌课程节选