When I read this, at the beginning of the passage I was skeptical, thinking "where is she going with this"? But the end bit makes complete sense: why does some art immediately register within you while other pieces simply don't leave an impression? There's some sort of connectivity, some sort of matching up taking place, whether it's with a good book, an incredible sculpture or an awesome photograph. There's something uniquely similar, replicated in that art that makes it feel like it's part of you and you want to hang on to it, continue to experience it.
(As you can see I've made it to page 19... three weeks and that's as far as I got...)