Robot: A fence works two ways, Professor Robinson: To keep something in and to keep something out.
Smith: Allow me the wages of ignorance. Had the Professor and the rest of you intellectual unfortunates allowed me to counsel and direct more of your decisions, this would never have happened.
Maj. West: Really Smith? And what pearl of wisdom would you offer?
Smith: A naively simple piece of logic, Major: Never land on a planet where there is any indication of alien hostility.
Will: Maybe you should take time to understand your enemies and their points of view.
Megazor: I do understand my enemies. They want to kill me.
Megazor: The computer makes no allowance for excuses. It gives and takes points as required.