Little by little, you're just letting yourself become... Tyler Durden.

This book is Fight Club.

Argument #1: Hoja v. Narr.

Hoja acts. Hoja has the qualities that the narrator lacks and desires. Hoja is Tyler Durden.
Hoja keeps the narrator trapped in his 'game'. Tyler acts in a similar way towards the narrator.
Hoja has a contempt for people who live in the 'game world' just as Tyler has contempt for people living in the consumer/media/non-necessary world. Hoja and Tyler think in a different way that intrigue Narr. 1 and Narr 2. Both have a special bond with their stronger counterparts and grow to love them.

Argument #2 Plotline of Hoja and Narr. relationship

Hoja and Narr.

Teacher/Student---->Out of control/Resentful----->Love/Hate/Wishing he were more involved...still reading....

Tyler and Narr.

Teacher/Student---->Love/Hate/Wishing he were more involved--->Out of control/resentful--->Reclaiming of Identity

Argument #3 They never interact in front of other people

Although Tyler and Narrator do interact in front of other people, it parallels because it stresses how Hoja and the narrator seem to be the same person. The narrator observes from the outside, or sometimes is within the action, but the other is always present (think of the meetings with the sultan, or when the neighbor comes over...where is narrator??). In Fight club the narrator is sometimes playing the role of observer, observing himself. And sometimes he is within himself, but being influenced by Tyler.

Argument #4 Intimate emotional knowledge is known between each other.

Hoja frequently tells the narrator about his outings but the narrator seems to know an inordinate amount of what Hoja was feeling and nuances that make it seem as if he was there.

Argument #5 Hoja "was going to teach [him] fearlessness"

remind anyone of the chemical/hand burn scene??

Argument #6 Hoja and Narrator are pretty much, or actually, the same person.

self explanatory for those who have seen fight club....

.....I would go on but I think that I've exhausted the Fight Club theory for now....