One of my favorite ideas from the book is the idea of reading for "enlightenment":
"It is true, of course, that you should be able to remember what the author said as well as know what he meant. Being informed is prerequisite to being enlightened. The point, however, is not to stop at being informed."
You don't just want to memorize what an author said, you want to elevate your level of "understanding" to a point where you understand the topic nearly as well as the author does! With that as a goal, your focus quickly shifts from reading 100 books in a year to properly educating yourself.