Victor Frankenstein, the protagonist of Mary Shelley's novel "Frankenstein," is driven by several motivations for creating life, but his strongest motivation seems to be the desire to become famous and to achieve greatness.
From a young age, Victor has a strong desire to explore the secrets of the universe, and he becomes fascinated with natural philosophy and chemistry. He sees his studies as a means of gaining knowledge and power that will allow him to become a great man, someone who will be remembered by history. Victor's desire for greatness is also fueled by the examples of historical figures like Cornelius Agrippa and Paracelsus, who were known for their work in the fields of magic and alchemy.
When Victor sets out to create life, he sees it as the ultimate achievement, the pinnacle of his quest for knowledge and power. He believes that by creating life, he will become like a god, able to control the forces of nature and achieve immortality. Victor is so obsessed with this idea that he becomes blind to the potential consequences of his actions and is unable to see the ethical and moral implications of creating life.
Despite his initial excitement and sense of accomplishment, Victor soon realizes the terrible mistake he has made. He is horrified by the monster he has created and the destruction it brings, which ultimately leads to his own downfall. In the end, Victor's strongest motivation for creating life turns out to be his tragic flaw, the driving force behind his ultimate destruction.
Overall, Victor's desire for greatness and his need for recognition are the strongest motivations for his creation of life. However, these motivations ultimately lead to his downfall, as he becomes consumed by his own ambition and is unable to see the consequences of his actions.