Symbols are objects, characters, figures, and colors used to represent abstract ideas or concepts.
“What could not be expected in the country of eternal light?” asks Walton, displaying a faith in, and optimism about, science. In Frankenstein, light symbolizes knowledge, discovery, and enlightenment. The natural world is a place of dark secrets, hidden passages, and unknown mechanisms; the goal of the scientist is then to reach light. The dangerous and more powerful cousin of light is fire. The monster’s first experience with a still-smoldering flame reveals the dual nature of fire: he discovers excitedly that it creates light in the darkness of the night, but also that it harms him when he touches it.
The presence of fire in the text also brings to mind the full title of Shelley’s novel, Frankenstein: or, The Modern Prometheus. The Greek god Prometheus gave the knowledge of fire to humanity and was then severely punished for it. Victor, attempting to become a modern Prometheus, is certainly punished, but unlike fire, his “gift” to humanity—knowledge of the secret of life—remains a secret.