A Quote from Portal 2
GLaDOS
I hope you brought something stronger than a portal gun this time. Otherwise, I'm afraid you're about to become the immediate past president of the Being Alive Club. Ha, ha.
More quotes from Portal 2
Ooh. It's dark down here, isn't it? They say that the old caretaker of this place went absolutely crazy. Chopped up his entire staff - of robots - all of them robots! They say at night you can still hear the screams - of their replicas. All of them functionally indistinguishable from the originals... No memory of the incident... Nobody knows what they're screaming about. Ab-solutely terrifying. Though obviously not paranormal in any meaningful way.
You know, I'm not stupid. I realize you don't want to put me back in charge. You think I'll betray you. And on any other day, you'd be right. 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!
Well done. Here are the test results: You are a horrible person. I'm serious, that's what it says: "A horrible person." We weren't even testing for that. Don't let that horrible-person thing discourage you. It's just a data point. If it makes you feel any better, science has now validated your birth mother's decision to abandon you on a doorstep.
If the rules of physics no longer apply in the future, then god help you.
You know, there are test subjects in Africa who don't even have monitors in their test chambers. Why don't you think of that before you break any more of them?