“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”

“I did not have enough courage to go round to the back of the villa. I should certainly have been noticed by someone. Why in spite of this, did I have the feeling of having been there already–a long time ago? Don't we infact know in advance all the landscapes we see in our life? Can anything occur that is entirely new, that in depths of our being, we have not anticipated for a long time?”

“A world of "if"s, but it would make no difference. If I could go back in time... but I couldn't. The past was behind me. The best thing now would be to stop looking over my shoulder. It was time to forget the past and look to the present and future.”

“I do not want to go back to the past; I want to go back to the past way of facing the future.”

“I go back to December, turn around and make it alright I go back to December, turn around and change my own mind I go back to December all the time”

“There are times when I wish I could go back and change the course of my life. Make different choices...But the past cannot be changed, and we carry our choices with us, forward, into the unknown. We can only move on. Do you remember that I told you that at Spence?”