““Writers don’t write in a void. We work in a physical space, a room, ideally in a house like Laxness’s Gljúfrasteinn, but also we write within an imaginative space. Amid boxes, crates, shelves and cabinets full of … junk, treasure, both cultural – nursery rhymes, mythologies, histories, what Tolkien called “the compost heap” – and also personal stuff: childhood TV, home-grown cosmologies, stories we hear first from our parents, or later from our children, and, crucially, maps. Mental maps. Maps with edges. And for Auden, for so many of us, it’s the edges of the maps that fascinate …””