Answer:
The protagonists' name is in the name of the title. Harry Potter, the chosen one, an orphan whose wizard parents passed away whilst fighting a powerful dark lord. Harry was protected and his parents love saved him from dying, and to everyone's surprise he had the power to make the dark lord disappear. He has been called the chosen one from then. Due to this power of Harry's, he obtained a thunder scar above his eye, he has ruffled black hair, round glasses, and a skinny body. Harry was brought up by his aunty and uncle, where he was badly mistreated. Throughout the course of the story, he finds his place in Hogwarts, snoops around, and discovers many secrets. Ultimately his friends and him played a role of saving the school from danger.
The quote I've chosen is:
"I think I can tell who the wrong sort are for myself, thanks."
This was when Draco had told Harry to leave Ron because he was the "wrong sort of friend". Harry replied with this quote, and I feel that it's very important to the story because Harry couldn't have defeated the evil he confronted without the help of his friends. These friends play an important role toward the story, and definitely show his character of being loyal.