In Emily Dickinson's poem "Heart, we will forget him," the speaker addresses her heart, proposing to let go of a memory or a person who has caused her distress. She suggests that, together, they should make an effort to forget this individual as night falls. The mention of "tonight" signifies an immediate emotional struggle, highlighting the tension between the desire to move on and the difficulty of doing so.

The poem encapsulates themes of memory, loss, and the complexities of emotional attachment. By personifying the heart, Dickinson explores the conflict between rational decision-making and deep-seated feelings. Ultimately, the speaker expresses a yearning for solace and closure, while acknowledging the challenge inherent in letting go of someone significant.