Back in my bookselling days during the early noughties, I spent a grey London autumn in the company of W.B. Yeats. My employers were Maggs Bros., an old Quaker firm and the queen’s booksellers, then based in Mayfair’s Berkeley Square: a venue that sounds glamorous but wasn’t, or at least not for me. The job involved much sitting in an underheated basement, beneath windows that offered a glimpse of passing ankles, cataloguing my way through stacks that bulged with a collection of Irish literature, predominantly by or associated with Yeats, assembled with frugal determination and frankly insane completism over decades by an autodidact bus conductor from South London.