You do a film and you have hopes for it, and you read it, and you see it one way in your head, and you shoot it, and it'll always change from what you started out. Sometimes it turns out better, sometimes it turns out; I don't know, but as movies go I've never experienced seeing and likening what I've read, and I liked what I read.
Reading is a heady thing. You can be into the action of someone's thoughts and take a whole trip down someone's ruminations while seconds tick by in the world that they're in, but you can't really do that in film. Some films can, but not too much.