Heaney is never going to be a distant figurehead, grand oldmannish sort of writer. He writes from the heart, swayed and buoyed by his excitement at other people's work; a great writer is, after all, the best reader anyone could hope for. Eliot and Yeats are the towering presences here, but he also keeps coming back to Elizabeth Bishop, to Larkin, Mandelstam, Herbert, Milosz, Dickinson, Wallace Stevens and there are lengthy, searching appreciations of Sylvia Plath, Robert Lowell and WH Auden. John Clare's Prog is one of many pieces which convey Heaney's delight in other people's suppleness and expertise; he takes us through Clare's poem The Mouse's Nest fairly gloating and crowing over the choice of words, the poet's "spontaneous at-homeness in speech itself ". Not that pleasure ever blinds Heaney: he is an astute critic, sometimes making leaps of intellect that are breathtaking and always expressing himself in the most beautiful vocabulary; wide, apt and never ornate.