Kinnell’s “The Grey Heron”: E.O. Wilson, Robert Hass, Laura McPhee; On Gwendolyn Brooks’s “To Prisoners”: Anna Deveare Smith, Reginald Dwayne Betts, Li-Young Lee and a chorus of exonerees from the Innocence Project; On William Carlos Williams’s “This Is Just To Say”: Woody Allen, Jane Hirshfield, Rafael Campo