Here is a tip for you.
If you are keeping a book in your collection simply to hold on to a page or two: get rid of the book. Instead, take pictures of those pages, scan them or duplicate the text, preferably digitally. Gain this way actual physical space and freedom as you don’t have to look for that one particular thing between all your other books. I applied this method with a vegetarian cookbook, it was a book that meant nothing for me: there was no sentimental value, it was neither visually nor physically pleasing. I wasn’t fond of the book in any way, except for that one recipe that happened to be a success for us at home and that’s what I chose to keep: just the recipe.
image by Nick prideaux