Many friends have said to me, 'I never know when you write your books, because I've never seen you writing, or even seen you go away to write.' I must behave rather as dogs do when they retire with a bone; they depart in a secretive manner and you do not see them again for an odd half hour. They return self-consciously with mud on their noses. I do much the same.
Daily Rituals: How Artists Work (2013)