Selfishness In Frankenstein
This is supported by Mary Shelley's Frankenstein. In this classic novel, a created "human" with no upbringing to speak of is shown to be selfless and even loving. It is simply in a person's nature to want to help, even if no one has shown them kindness before. The Creation states, "I was benevolent and good; misery made me a find." Obviously, this shows that he felt that he was inherently good, but his environment made him into a beast. The way every person he's met has passionately rejected him has an obvious impact. His nature was to be good and kind, but over time the repeated abuse made him vengeful.