It's a love not just of books but of words too. There is a marvellous piece about the love of long or unusual words - The Joy of Sesquipedalians. It was bred in her though:
"''When I was growing up, not only did my family walk around spouting sesquipedalians, but we viewed all forms of intellectual competition as a sacrament, a kind of holy water as it were, to be slathered on at every opportunity."''
Wonderful. The essay's an excellent illustration not just of how words have gone out of fashion but also of the way that language develops. After all, computers have spawned a whole new vocabulary which wasn't even dreamt of twenty years ago.