GLADos: Congratulations on letting that little idiot in charge of the whole facility. *clap clap clap* *Slow clap available* Oh, good thing that's still installed.
Wheatley: Holmes vs Moriarty. Aristotle vs SMASHY SMASHY!
Cave Johnson: When life gives you lemons, you make lemonade. *cutting to the best part of his speech* I don't want any of your damn lemons! Do you know who I am?! I'm the guy that's gonna burn down your house down, with the lemons!
These may not be the lines from the game, but it's pretty close. It's my interpretation of them without looking up the lines. 😅