In the remote Scottish village where Victor begins his creation of a female companion for his "monster" with what he calls "a tremulous and eager hope." However, one night as the moon just begins its ascension from the sea, Victor Frankenstein must take a break; as he does he begins to reflect upon what he is doing:
Three years before I was engaged in the same manner, and had created a fiend whose unparalleled barabarity had desolated my heart, and filled it for ever with the bitterest remorse. I was now about to form another being, of whose dispositions I was alike ignorant....
Victor worries about what this female may become. And, while the monster has sworn to leave the area and never come around people, the female, if created, would not have made such a commitment. What could happen then? Also, Victor wonders how his monster will react if he must face one daily that resembles him. Or, she might turn from him in abhorrence if she is composed in a more pleasing fashion. Then, the monster would again be alone, and renew his revenge upon mankind. Carrying his thoughts further, Victor is anxious about the couples' reproducing, if possible, and "a race of devils would be propagated upon the earth" who could diminish the current species of man. All these reflections turn Victor from the "sophism" of the being he has already created. He fears that if he creates yet another, future generation will curse him as "their pest."
When he trembles and looks up, Victor sees "the daemon at the casement," who face,Victor feels conveys malice and treachery. In a passionate reaction, Victor tears to pieces the "thing" which he fashions. The creature outside witnesses this and "with a howl of devilish despair and revenge" he goes away.
This passage is significant because in it Shelley explores the debate of scientific discovery and its ramifications for humanity. Besides the sin of Victor as he presumes to create a being, there is also the question of whether scientific discovery can always benefit man. May it not hinder the soul, the goodness in man as it substitutes for actions that should be dictated by the human heart?