We can deduce that the aspect of this poem that most clearly marks it as a work of Modernism is: And in my heart there stirs a quiet pain.
Modernism actually refers to a lyrical expression that is used by modernist to emphasize on personal imagination, emotions and memories shared by the poet.
Here we see that the poet refers to the pain he feels in his heart. The subject here is the pain he feels.
Learn more about modernism on https://brainly.com/question/25078409
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