I’ve always thought journals and letters among the best of bedside books. The entries, for one thing, are just long enough, usually, to end as drowsiness begins to be irresistible. I first came across one of Horace Walpole’s letters in an anthology, and thought it was as entertaining as one of Byron’s. I looked out more of them; they too were as entertaining as Byron’s – maybe even more so. I had recently given up buying, volume by volume as they came out, the great Murray edition of Byron’s letters, on the grounds that they had become too expensive; a decision I now regret with inexpressible bitterness. But maybe there was an affordable collected edition of Walpole’s.