“The truth is that I did feel bad before, but now my patience is at a thread. It's not as if I can go back and undo the past.”

“In the final seconds before sleep, I wish I could go back and undo everything, give those little girls another chance.”

“The past is weird. I mean, does it really exist ? It feels like it exists, but where is it ? And if it did exists, but doesn’t now, then where did it go ?”

“I used to think that I wouldn't change anything from my past, because doing so would inevitably affect who I am now. But considering my current state, I'm thinking it might not be a bad idea to go back in time to fix things.”

“I only did it,' I said, 'now this is going to be the truth, Teddy, I only did it because it seemed to be the glamorous thing to do at the time. It was my ideal of glamour.”

“Ah, yes, the trusty time paradox. If I go back in time and kill my grandfather, then shall I cease to exist? I believe, as Gorben and Berndt did, that any repercussions are already being felt. We can only change the future, not the past or present. If I go back, then I have already been back.- Artemis Fowl”