How can you explain the dualism in Frankenstein ?

As defined by Rene Descartes, dualism refers to the separation between one’s mind and one’s body. Together, the mind and body form the whole person, but each is its own distinct part of the individual.
One of the central problems that dualism addresses is whether the mind is a part of the body or vice versa.
In Mary Shelley’s Frankenstein, the monster’s creation also addresses the question of the mind versus the body. Victor creates the monster’s body from the disparate parts of recently buried corpses. These parts, in order for reanimation to be successful, must be carefully constructed. Victor also had to have included a human brain to give his monster control over its own body.
Although Victor’s experiment is successful, the monster horrifies him so much that he shuns it, hoping it will die or that he can kill it. What Victor does not account for before bringing his creation to life is that the monster is a sentient being with his own thoughts and emotions.
Victor fails to consider how the monster might feel about being created, or even how it might feel about its creator. Because the monster is a regretted science experiment to Victor, he disregards it as non-human and soulless.
However, the monster slowly develops a rich inner life, learning to process and evaluate his environment and other people. The development of the monster’s mind is disconnected from physical development because the monster is “birthed” in a state of physical maturity. Based on this, one could argue that the monster is an example of Cartesian duality since his mind is separate from his body.