"You know, back in the day, I burned an entire city to the ground just to see the pretty shapes the smoke made. I'm sorry your Plus One doesn't get a happy ending. But like it or not, I just saved this world because I WANT to change. Your version of 'good' is not absolute. It's vain, and arrogant, and sentimental. If you're waiting for me to become all that, I'm going to be here for a long time yet."
Missy, "Lie of the Land", from Doctor Who.