When the holidays approach, our places can start to seem visually cluttered—and sometimes this leads to a little voice in our heads suggesting we get rid of books. Unloading a few books that haven’t been important to us, donating them to the Salvation Army, hospital libraries, etc., may be in order—but don’t part with books that have had a meaningful effect on how you’ve thought and lived unless you must (and a must situation in this case is truly severe,…