Dear Muscovites and guests to our capital! The Moscow metro is a form of transportation which involves a heightened level of danger.
The opening quote
Millions of shining lights, silver nails driven into a dome of dark blue velvet...
—Artyom seeing the night sky for the first time
"I've died, there is no more me."
—Bourbon, right before dying
He who is brave and patient enough to peer into the darkness his whole life will be first to see a flicker of light in it.
— Khan in his note to Artyom.
The Video Game
Fear the light. Fear the dark. Fear the future.
"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?"
"You reap what you sow Artyom. Force answers force, war breeds war and death only brings death. To break this vicious circle one must do more than act without any thought or doubt."