"You reap what you sow, Artyom. Force answers force, war breeds war, and death only brings more death. To break this vicious cycle one must do more than just act without any thought or doubt" - Khan, Metro 2033

"It appears that the devastation we brought upon ourselves was complete; Heaven, Hell and Purgatory were atomized as well. So when a soul leaves the body it has nowhere to go, and must remain here, in the Metro. A harsh, but not undeserved atonement for our sins, wouldn't you agree?" - Khan, Metro 2033

"Wicked phenomenon, yes? But, you know, it’s not any more "evil" than, say… fire. It all depends on your point of view. Try to get a better understanding of things before you make your judgement." - Khan, Metro 2033