WHAT!? NO PHOTOGRAPHIC MEMORY!!? Not to worry. Book Darts is one fine solution! Book Darts are precision-cut, paper-thin metal line markers that attach easily to any page. To use, place Book Dart at desired line, close book and press in. Sliding a Dart onto a passage assures you can recall it easily even in a closed book. 

Answers the question: “How can we mark our exact passages, find them again, quickly and surely, and never harm the page?”