In fact, Yeats sees his poems as a kind of summoning of spirits or evocation of spirits, as he refers to it.

实际上，叶芝认为他的诗歌,如他所说在召集传唤灵魂。

耶鲁公开课 - 现代诗歌课程节选

Death and disease are consigned to the realm of these evil demons or these impure evil spirits, but they are siblings with the good gods.

死亡和疾病归这些恶神和邪灵管,但是这些恶神往往和善神是兄弟姐妹。

耶鲁公开课 - 旧约导论课程节选