That's exactly what this man did, over eight years from 1998 to 2006. He has given no explanation as to why he did it, but hundreds of pages from some of the most valuable books in England (and possibly the world) were found in his own personal library after he removed them from volumes within the British and the Bodlein Libraries. My guess is he planned to take the whole book home with him, a few pages at a time. I think pages in your pocket are probably easier to smuggle out than a whole book under your jumper. Of course, he could have had the same books in his collection that were missing a few pages and wanted to complete them.
What do you think? Are you scandalised at the thought of cutting out pages from precious books? What would you steal if you were a millionaire?