Cave Johnson:"When life gives you lemons, don't make lemonade. Make life take the lemons back! Get mad! I don't want your damn lemons! What am I supposed to do with these?! Demand to see life's manager! Make life rue the day it thought it could give Cave Johnson lemons! Do you know who I am?! I'm the man who's going to burn your house down, with the lemons!"
GLaDOS:"So was there anything you wanted to apologize to me for?"
GLaDOS:"It's been fun. Don't come back."
GLaDOS: "Hello Imbecile!"
GLaDOS:"Now you're just wasting my time."
Robot:"Thank you for assuming the party escort submission position."
Turret:"Target acquired."
Wheatley:"Fool! You were a fool to come back, because I've trapped you again! Helpless! You're at my mercy, and I don't have any. You're at my nothing! You're at, you're at my lack of mercy!"
Wikipedia
