When Montag returns to the firehouse for work, he is divided. What are the divisions within himself that he experiences?

He experimented a division within himself, he thought about his Job and burning books, he considered himself a fool. He also thought about Faber the old man who did not agree on burning books but couldn't do anything to stop it.

Explanation:

The division he experimented had to do with the fact that he was changed, he was not sure about his job. He did not agree on burning books, he was changed because he met Clarisse and she showed him things about book and imagination.

His job no longer had sense for him, he was divided because his job was something that had terrible inmplications in society. To burn books was something that affected all and he had second thoughts about it. Faber adviced him not to tell anything but he couldn't settle himself with that.