What is the theme of harry wood poem?

The theme of the poem "Harry Wood" by James Whitcomb Riley is a mixture of nostalgia, loss, and the lasting impact of childhood friendships. The speaker reflects on his friendship with Harry Wood, a childhood friend who passed away at a young age. Throughout the poem, the speaker expresses his longing for those simpler times, his deep admiration for Harry, and the indelible mark that their friendship left on his heart.