However, near the end of the series, when a certain character dies, I was astonished (I never watched a cartoon before where a character dies - even the villains survived). When the novel reached its climax (let's just say when a main character had to die) I wished I stop watching the series in the second year.
I didn't realize then that the series was about growing up and that for this to happen we must start doing things that are unpleasand to us, but we very well know that they are the right things to do. I wish I got the meaning earlier.
Anyway, enjoy the series. There is a movie starring Gregory Peck based on the same novel.