The eternal challenge for screenwriter adapters is figuring out how to make something work on screen, when so much of what made it work in the book were the thoughts of the character, and obviously wanting to avoid voiceover.
A certain luxury when you get to writing a novel is to have the space to have your characters just banter.
I was half asleep but I smiled. In spite of all his irritating qualities, I couldn't help liking a man who despised a fictional character with such passion.