Throughout his story, there is a sense of how humanity is toxic waste. He was mistreated when he was a child, enslaved and abandoned. He was brought back to civilization by force where he had to know the cruel human nature, being constantly the target of frauds for having limited knowledge of social interaction. You see, most people are a bunch of trash who like to take advantage of the weakest and most vulnerable. I truly despise humanity and even though some people are really decent, they do not make up for the overwhelming majority who are nothing more than scum.
