This is a great question. As you probably know the thesis of a paper is the most important part of any literary work. In light of this, I would say that you thesis is excellent for two reasons.
First, your thesis is clear and succinct. In other words, there is no question or ambiguity about what your paper will be about. You will argue that the book represents the evil that lurks in people's hearts, even in the civilized soul.
Second, your thesis is debatable. This is actually an important point. All great theses are debatable. If a thesis is not debatable, then it is not a thesis at all. There can be no discussion or sustained argumentation. In light of this, not all people will agree with you; this is what you want.
Finally, what you need to do is now give excellent support for your thesis from the text. If you supply great quotes, use of imageries, and the like, your paper will be very successful.