No one but myself knows what I have suffered, nor what my books have gained, by your unsleeping watchfulness and admirable pertinacity. And now here is a volume that goes into the world and lacks your imprimatur: a strange thing in our joint lives; and the reason of it stranger still I have watched with interest, with pain, and at length with amusement, your unavailing attempts to peruse The Black Arrow; and I think I should lack humour indeed, if I let the occasion slip and did not place your name in the fly-leaf of the only book of mine that you have never read-and never will read.