I'm saddened to hear of the passing of Michael Longley. It's more than 20 years now since I studied his poetry for the Leaving Cert, and yet there are still passages and images from his work that have stuck with me all that time.
The two in particular that have stayed with me are "Wounds" and "Ceasefire", with their focus on the victims of violence and the demands—and costs—of peace. (The latter poem I think does something more emotionally imaginative with Greek myth in four stanzas than recent movie "The Return" managed in more than two hours.)