The book I am currently reading is Metro 2035, by Dmitry Glukhovsky, and it is the last in the series. The series takes place in a post apocalyptic wasteland, centered around the metros of Russia. The denizens of the metro all believe that the entire world besides them has been killed in the war causing them to take refuge in subway stations, except for Artyom, the main character.  He refuses to believe that the entire world has simply vanished because of the war. Because of his determination to find others and one day live on the surface once more, he constantly ventures out onto the radiation scarred Earth, to hopefully find more survivors throughout the world. The determination he carries, despite the fact that he is ostracized because of his beliefs, is a trait heavily embedded into his character, and is one that should be embedded within everyone’s character, as determination is needed to create a change in the world, despite how others might view your thoughts.  Galileo had done the same as Artyom, and despite being shunned by all, he changed science forever.