The poem is entirely pessimistic, with the speaker’s sadness sustained throughout. The poem is devoid of any positivity, and this is reflected in the mood.
The speaker’s use of language, in terms of word choice, solidifies the sense of despair he feels.
Only singular pronouns, never collective, are used and repeated throughout. This highlights (and consolidates) the sense that the speaker is alone, and stresses the separation between the speaker and the woman.
The speaker’s heart is said to be
aching – with its connotations of extreme despair – and that
gloom engulfs him. There are lots of other words that effectively capture (and consolidate) the speaker’s sense of suffering –
Pursuit tells the reader that the speaker is (metaphorically) chasing the woman. That the present tense is used in
my pursuit in the final stanza suggests that, though devoid of hope, this
pursuit will continue.