I like best to have one book in my hand, and a stack of others on the floor beside me, so as to know the supply of poppy and mandragora will not run out before the small hours.
All good and true book-lovers practice the pleasing and improving avocation of reading in bed ... No book can be appreciated until it has been slept with and dreamed over.
I suspect it may be like the difference between a drinker and an alcoholic; the one merely reads books, the other needs books to make it through the day.