Final answer:
Longfellow's "The Arrow and the Song" and Blake's "A Poison Tree" both address the theme of consequences resulting from actions and emotions, but do so in contrasting manners; Longfellow's poem ends on an optimistic note, while Blake's serves as a warning against nurturing negative emotions.
Step-by-step explanation:
Henry Wadsworth Longfellow's "The Arrow and the Song" and William Blake's "A Poison Tree" both vividly explore the theme that all actions and emotions bear consequences, illustrating critical insights into human behavior and the lasting effects of our choices. Longfellow's poem uses the metaphor of an arrow for actions and a song for words, suggesting that even when the origin of these is forgotten, they will eventually find a mark -- whether it be the breast of an oak or the heart of a man. Meanwhile, Blake's poem adopts a more direct approach to underscore the destructive nature of nurtured anger, with the extended metaphor of a tree growing from suppressed ire, eventually leading to tragic ends.
The contrast in the tone of both poems is significant. Longfellow's is ultimately uplifting, suggesting that good deeds and kind words will find a positive outcome, even if not immediately apparent. In contrast, Blake's poem serves as a cautionary tale about the toxic results of harboring negative emotions, resulting in grave consequences. However, both poems underscore the profound truth that emotions and actions ripple outwards from their source, affecting the individual and the world around them.
In analyzing these poems' treatment of consequences, it becomes clear that while the themes may be similar, the poets' approach and ultimate message differ subtly but profoundly. Longfellow suggests a hopeful perspective on the journey of our actions and words, while Blake warns of the perils of unresolved anger and its inevitable destruction. Both poems serve to remind the reader of the power they hold within their actions and words, shaping a broader understanding of the human condition and the irrevocable consequences of our emotional landscape.