Ivan is the one character most plagued by doubt. The story the devil tells him about the nose, about how man missing his nose is free not to be led around by the nose but, in fact, does want to be led around by the nose and is, again in fact, being led around by the nose he doesn’t have is a wonderful analogy. And I just thought of Gogol’s ‘The Nose’.
He both believes and doesn’t. He doesn’t want to commit.