I have no extracurricular activities beyond the study of Latin and the collection of offensive jokes about the Holocaust. I live on X Street, on the Xth floor, and weigh X pounds.
-- Addison (chapter 1)

Importance: Addison is trying to explain that he is just an ordinary high school student. With quotes of this kind, the reader has to remember that Addison is actually writing an essay in an effort to explain his best and worst qualities.

But it's part of the larger official message hawked by our administration: selfishness is the highest evil. Which means, if you think about it, that all private desires participate in evil."
-- Addison (chapter 3)

Importance: Addison is referring to the sign above the copy machine at school, but he is also saying that many people pretend to be something they are not when they act as if they have no selfishness at all. This is one of many examples of attitudes...