Looking for a good theme for my research essay on Frankenstein, any ideas?

The theme of nature versus nuture would be an excellent choice for an essay. The theme of nurturing, or how environment contributes to a person's character, truly fills the novel. With every turn of the page, another nurturing example contrasts with Victor's lack of a parental role with his "child," the creature. Caro line nurtures Elizabeth back to health and loses her own life as a result. Clerval nurtures Victor through his illness when he is in desperate need of a caretaker after the creature is brought to life. The De Lacey's nurturing home becomes a model for the creature, as he begins to return their love in ways the family cannot even comprehend. For instance, the creature stopped stealing the De Lacey's food after realizing their poverty. In sympathy, he left firewood for the family to reduce Felix's chores

Each nurturing act contrasts strongly with Victor's gross neglect of the creature's needs. And by showing the affection between Caroline Frankenstein and her adopted daughters Elizabeth and Justine, Shelley suggests that a child need not have biological ties to a parent to deserve an abundance of love and attention.