I have seen worlds bathed in the Makers' flames. Their denizens fading without so much as a whimper. Entire planetary systems born and razed in the time that it takes your mortal hearts to beat once. Yet all throughout, my own heart, devoid of emotion... of empathy. I... have... felt... NOTHING! A million, million lives wasted. Had they all held within them your tenacity? Had they all loved life as you do? Perhaps it is your imperfection that which grants you free will. That allows you to persevere against all cosmically calculated odds. You prevailed where the Titans' own perfect creations have failed. I've rearranged the reply code. Your planet will be spared. I cannot be certain of my own calculations anymore.
— Algalon the Observer, World of Warcraft
The scientists were always hanging cores on me to regulate my behavior. I've heard voices all my life. But now I hear the voice of a conscience. And it's terrifying, because for the first time... It's MY voice! I'm being serious! I think there's something really wrong with me!
— GLaDOS, Portal 2