"So, Marked One, I saved you and I'm not gonna pretend I did it to win favors upstairs. You do some jobs for me, and we're even. Besides, keeping you busy might be a good way to deal with your amnesia. And I'll see what I can find out about your problem. I don't give a shit why you want to find this Strelok guy and mind my own business. If you want to kill him, well, you must have your reasons."
-Sidorovich, STALKER:Shadow of Chernobyl(great game by the way)