"Because, Jack, whenever I try to really do all I'm capable of, the outcome is..." The Doctor trailed off, rubbing his eye before slowly lowering his hand. "I've made too many mistakes already. Tried to stop things that shouldn't be stopped and caused things that wouldn't have happened if I'd just..." Trailing off again he shook his head.

"The man you think I am, Jack, I don't believe he exists. And if he does, you're closer to being him than I am. I'm just an idiot who can't stop meddling."