Maybe, but there's always a risk with burning in that if you throw a stack in, it can take a very long time for the fire to reach the center of the inner papers. If you're not paying attention, you can end up with lots of pieces that are still readable.
When I was in college I lived for a while with a bunch of roommates in an old house that had a fire place. Sometimes we would have a fire in the fire place.
One roommate was convinced that if a single piece of paper thrown in the fire flares up and burns really fast, then an old phone book thrown in would REALLY burn fast, it would be AMAZING!!
It wasn't. It took a week of having a fire everyday to finally consume the whole thing, slowly. It burned slower than regular wood. We kept needing to pile wood on top of it, poke at it with the poker, stir it around. Books just don't burn all that well. Severe let down.