Michael Longley holds on his lap his lifetime’s work. His wife, the academic and critic Edna Longley, suggested Ash Keys as the title for this latest collection of poetry, “because she likes that poem, and she thinks of them as a symbol of poems floating out on the wind and their air to find their readers.” Longley liked it too: it had a “similar texture” to Gorse Fires, his best-known volume, and because a title should be “a kind of compass point for a poem, for a book”. It is also a compass point for Longley’s life. Ash Keys: New...