"[Voiceover as Tony reads the letter] Tony– I'm glad you're back at the compound. I don't like the idea of you rattling around a mansion by yourself. We all need family. The Avengers are yours. Maybe more so than mine. I've been on my own since I was 18. I never really fit in anywhere, even in the army. My faith's in people, I guess. Individuals. And I'm happy to say that, for the most part, they haven't let me down. Which is why I can't let them down either. Locks can be replaced, but maybe they shouldn't. I know I hurt you, Tony. I guess I thought by not telling you about your parents I was sparing you, but I can see now that I was really sparing myself, and I'm sorry. Hopefully one day you can understand. I wish we agreed on the Accords, I really do. I know you're doing what you believe in, and that's all any of us can do. That's all any of us should. So no matter what, I promise you, if you need us– if you need me– I'll be there."