Here's a breakdown of the key elements contributing to the tone:
* Melancholy: The poem explores the haunting presence of grief and loss, suggesting that these emotions can invade anyone, regardless of their physical surroundings. The image of a "haunted" heart and the line "The mind, once it has tasted of the tomb" evoke a sense of deep sadness and longing.
* Introspection: The poem encourages a deep examination of the self, asking the reader to consider the inner experiences that shape our reality. The focus on the "mind" and the "heart" suggests an inward journey of self-discovery.
* Defiance: Despite the melancholic themes, there is a sense of resilience and even defiance in the poem. The speaker asserts that "one need not be a chamber to be haunted," implying that the experience of grief and loss is not something to be feared or avoided. This can be seen as a call to embrace and confront these emotions.
Overall, the poem's tone is both introspective and evocative, leaving the reader with a sense of both the pain and the power of human emotion.