" I am a grenade," I said again. "I just want to stay away from people and read books and think and be with you guys because there's nothing I can do about hurting you: You're too invested, so just please let me do that, okay?

"I'm going to go to my room and read for awhile, okay? I'm fine. I really am fine: I just want to go read for a while. "

― John Green , The Fault in Our Stars