I personnally think he is more of a man of ideas, with all his movies having a certain complexity (sometimes borderline convoluted), than a director or a screenwriter (I cannot think of a memorable line from a Nolan movie, aside from "I'm Batman", which is not really his).
My problem with his work is the lack of style. I personnally think he is more of a man of ideas, with all his movies having a certain complexity (sometimes borderline convoluted), than a director or a screenwriter (I cannot think of a memorable line from a Nolan movie, aside from "I'm Batman", which is not really his). But ideas doesn't make you a great director, even less the best.