A folded corner. A spare receipt. An optimistic belief that we can totally remember the page number. We all have our ways of marking our place in a book before closing it for the time being -- but far too often that method is unreliable or unattractive. Remember, all those dog-eared page corners will still mark our books long after we've finished reading!
There is, however, an easy solution: Bring back the bookmark! A good bookmark will hold your place more clearly and reliably than a grubby bit of scrap paper, and it will ensure the structural integrity of each page in the book is preserved. Once you've tried a good bookmark, you'll never want to go back to the dark days of guessing whether you were at page 67 or page 76.