Symbols

As I have been reading the novel, I have noticed that fire seems to be a major symbol of Frankenstein. Such as when the monster finds a smoldering fire in the wilderness; he learns that the fire creates light in darkness, but is harmful when touched. Also the in the subtitle of the novel, Frankenstein: or, The Modern Prometheus. Prometheus was a Greek Titan, who stole fire from the gods to give to humans. The titan was severely punished for his actions, every day a bird would eat his liver and his liver would grow back, and then the bird would come back. Just like Prometheus, Victor has done an unthinkable deed. Victor played the role of God, creating life; as a consequence, V. Frankenstein is for ever tormented by the monster he created. I think that Victor was more severely punished because he endured emotional pain, Prometheus only suffered physical pain. Which do you think is more painful? Have you noticed any other major symbols of Frankenstein?