" Do I really deserve this? Artyom thought. Is my life so much more important than the lives of all these people? No, he was glad to have been rescued. But all these people – randomly scattered, like bags and rags, on the granite of the platform, side by side, on the rails, left forever in the poses that Hunter’s bullets had found them in – they all died so that he could live? Hunter had made this exchange with such ease, just as though he had sacrificed some minor chess figures to safeguard one of the most important pieces . . . He was just a player, and the metro was a chessboard, and all the figures were his, because he was playing the game with himself. But here was the question: Was Artyom such an important piece to the game that all these people had to perish for his preservation? "

― Dmitry Glukhovsky , Metro 2033 (Metro, #1)