I'm trying to make up a sentence that describes one of the goals of réalisme. I need to explain, that réalisme is trying to capture and describe the story that is happening inside the characters, rather than the actual events. So simply:
Naturalism is trying to capture the inside of human soul
If I'm wrong with this statement, please correct me. I'm not a literature student. This is what I'd say:
Le naturalisme essaie d'expliquer les entrailles des personnages.