How does Jonas, the main character, change throughout the story?What are the stages he goes through? What is his change?

In the beginning of the novel Jonas is like everyone else.  He doesn't question how his society works and he is kept ignorant of the reality of their life.  However, as the giver begins to give him memories, Jonas gains knowledge and insight into the world.  He is no longer able to live his life as he used to because he no longer views his world through the eyes of ignorance.  When he discovers what his society does during the release ceremonies, he decides to save the young child Gabriel by escaping the life he knows.