I know I'm probably going to get stoned or egged or tormented for saying it, but the most difficult book I read based on these lines was Wuthering Heights. It was painfully boring. My younger sister recently reported the same experience. I don't think it is bad, it was just not my style.
If we are counting assigned books for college classes, then I'll have to set aside a day to type up all of my examples
I can't even concentrate on a book I find too boring. I'll think I'm reading it, only to discover I've gone through a few pages and not been paying attention. I have a list of them because I don't read or do anything based on its supposed "intellectual" nature.
Wuthering Heights, though - one of my all-time favorite books.
In fairness to SOME seemingly boring books, some start out seeming that way, but if you get through the most boring part they can pick up speed.
One I couldn't get past the beginning was The Death of Ivan Ilych. I'm sorry.... I just found it torture. Another one (get the stones and tomatoes ready to throw) was Moby Dick. One big problem with that one was they made fifteen-year-old girls read it, and I pretty much think it would be a rare fifteen-year-old girl (and reader of Teen and Seventeen Magazine) who could muster up interest in whatever Ishmael had to say. I think if you managed to avoid reading Moby Dick at fifteen there's a good chance you aren't going back to read it on your own when you're more mature.