RoboGadget: Hey, why did you do that? We shouldn't be fighting. We have a lot in common. It's just that I have nicer teeth. We should be working together, be partners. Together, you and I could rule the world.
Inspector Gadget: You should have quit while you were ahead.
(Inspector Gadget tosses RoboGadget's head to the river)
  
  
  
  
  
   
  
  
Inspector Gadget: You should have quit while you were ahead.
(Inspector Gadget tosses RoboGadget's head to the river)
 RoboGadget : Hey, why did you do that? We shouldn't be fighting. We have a lot in common. It's just that I have nicer teeth. We should be working together, be partners. Together, you and I could rule the world. 
 Inspector Gadget : You should have quit while you were ahead. 
 (Inspector Gadget tosses RoboGadget's head to the river)  
http://www.moviequotedb.com/movies/inspector-gadget/quote_36672.html