Reading books is a hobby (O.K., obsession) of mine, but what truly intrigues me are the books themselves. Nothing is better than the feel of a book in your hands. Paperbacks are thin, fluttery, and malleable. The filmy cover invites you to open it anywhere, as if the words inside are whispering to be read. Hardbacks are bulky, blocky and solid. Prying them open is like spilling a secret. Once the books are finally open though, a whole new cacophony of senses emerges. First, the smell. Old books have a musty, almost moldy aroma, like walking into an old house.