Definition of Metaphor
Victor uses a simile and a metaphor and alludes to physicist Sir Isaac Newton when he describes his thirst for knowledge to Robert Walton in Chapter 2:
Sir Isaac Newton is said to have avowed that he felt like a child picking up shells beside the great and unexplored ocean of truth.
In Chapter 4, Victor uses a metaphor of light to describe his reaction after discovering the secret to life:
Unlock with LitCharts A+Life and death appeared to me ideal bounds, which I should first break through, and pour a torrent of light into our dark world. A new species would bless me as its creator and source; many happy and excellent natures would owe their being to me. No father could claim the gratitude of his child so completely as I should deserve theirs.
In Chapter 8, Victor uses the metaphor of the "never-dying worm" to express his guilt after Justine Moritz, his brother William’s nanny, is falsely accused of William's murder. The true murderer is in fact the Monster, whom Victor created and therefore feels responsible for:
Unlock with LitCharts A+But I, the true murderer, felt the never-dying worm alive in my bosom, which allowed of no hope or consolation.