The letters of famous people can be placed into two categories: there is the type of letter which becomes itself a valuable contribution to literature through its wit, style or wisdom; another kind is that whose main importance lies in the provision of a background to their author's life. Especially in the correspondence of great writers and poets, these two factors are very often combined.
So great was the noise during the day that I used to lie awake at night listening to silence.
It's a whydunnit in q-sharp major and it has a message: never talk to the sort of girls that you wouldn't leave lying about in your drawing-room for the servants to pick up.