Professor Charles Xavier : Shaw's declared war on mankind on all of us, he has to be stopped.
Erik Lehnsherr : I am not gonna stop Shaw, I am gonna kill him. Do you have it in you to allow that?
Erik Lehnsherr : You known all along why I was here Charles, but things have changed. What started as a covert of mission, tomorrow mankind will know mutants exist. Shaw, us, they won't differentiate. They'll fear us. And that fear will turn to hatred.
Professor Charles Xavier : Not if we stop a war, not if we can prevent Shaw, not if we risk our lives doing so.
Erik Lehnsherr : Would they do the same for us?
Professor Charles Xavier : We have it in us to be the better man.
Erik Lehnsherr : We already are! We are the next stage of human evolution, you said it yourself...
Professor Charles Xavier : No, no...
Erik Lehnsherr : Are you really so naive as to think that they won't battle their own extinction? Or is it arrogance?
Professor Charles Xavier : I am sorry.
Erik Lehnsherr : After tomorrow, they are gonna turn on us. But you are blinded because you believe they are all like Moira.
Professor Charles Xavier : And you believe they are all like Shaw.
Professor Charles Xavier : Listen to me very carefully, my friend: killing Shaw will not bring you peace.
Erik Lehnsherr : Peace was never an option.