Question

I would like to know if this would be a good thesis to prove for the novel: The Great Gatsby.
Thesis: Nick Carraway as the author has both its advantages, and its disadvantages; Nick begins the novel as an objective character full of honest thoughts, yet as the novel unfolds, Nick becomes very opinionated and one sided when telling the story, leading to a biased portrayal of some events.

Answers

Ms. Sue
It's much too long. Also -- Carraway is the narrator, not the author.

How about something like this?

Nick Carraway, the narrator of <i>The Great Gatsby</i> presents a biased portrayal of some events.

http://leo.stcloudstate.edu/acadwrite/thesistatement.html
Ms. Sue
I forgot a comma after <i>Gatsby</i>.
Justin
Thanks, and I had meant to put in narrator.
Ms. Sue
You're welcome.