1. The letter

"Selwyn,
I know this may never reach you but I need to do this both to clear my own head and if by chance this does reach you, I want you to know. I'm sorry. I'm sorry I couldn't help you when you needed it most. I'm sorry what happened happened and I both didn't and couldn't stop it. You didn't deserve any of that and I sat back and did nothing. Before everything happens, and the war gets even worse than it already is, I want you to know that I'm sorry and I love you.
Albus Dumbledore."