The Choices you make define who you really are (...and how you should be judged)
As JKR described in an interview with The Sydney Morning Herald, a major theme of Book 2 is to establish the effect of choices and actions taken by Harry and the other characters. No matter who they are or what kind of background they came from, each character is faced with choices that define who they are and what they will become. Those choices will also impact the lives of all the characters and are at the heart of this mystery. The Sorting Hat gave Harry a choice: Slytherin and power, or Gryffindor and morality. Harry took Gryffindor.
:::>^..^<::: ~*~The Journey is more important than the end or the start~*~ :::>^..^<:::
*This chapter begins on Harry's 12th birthday.
*Quick review of what happened last year.
*Uncle Vernon is complaining about Hedwig.
*The Dursleys are going to be having a dinner party, but Harry must remain in his room.
*He misses Ron and Hermione, and he hasn't recieved any letters from them over the summer.
Just a note to keep us on track, something Small in book 2 becomes something big in book 6. Start looking for clues, maybe we can guess correctly what is in store for Harry.