The universality of the theme of the poem is that "death is a truth". This means that death is a universal experience that every individual goes through regardless of their race, gender, or social status. The poem reflects on the inevitability of death and the finality of life.

There are several reasons why "death is a truth" can be considered a universal theme in literature:

1. Death is a common human experience: Every individual has to confront death at some point in their life, whether it is the death of a loved one or their own eventual demise. Death is an experience that transcends cultural, social, and economic boundaries.

2. Death is an inescapable reality: No matter how hard we try, we cannot escape death. It is a natural part of the life cycle and something that we cannot avoid.

3. Death is a source of reflection and contemplation: The finality of death forces us to reflect on the meaning of life and our place in the world. It encourages us to contemplate the bigger questions of existence and our purpose on this earth.

4. Death is a universal theme in literature: Many writers throughout history have explored the theme of death in their work, from Shakespeare's Hamlet to Emily Dickinson's poetry. This reflects the universality of the theme and its enduring relevance to human experience.

In conclusion, the universality of the theme of the poem is that "death is a truth". It is a theme that resonates with readers across time and cultures, reflecting the common human experience of mortality and the inevitability of death.