"We have both light and dark inside us. and it is what we chose to act on that makes us who we are. -Sirius Black" The only thing I'll never forgive is Harry being unable to see it, and extend the hand of friendship, thus teaching kids to do the same.
I was in L.A. class one time and a classmate asked what page we're supposed to turn to, and I answered My teacher was passing behind us when he heard that and he gave me a high five. I felt awesome (after explaining it to my non potter geek peer)