Consequently, pondering his own state of being, he asks: ‘Who was I? What was I? Whence did I come? What was my destination?’ (Shelley 128). His questions point to the central motif of the story: the question of human nature, a human essence, and what to include in the definition of this essence.
Lars Schmeink, Dystopia, Science Fiction, Posthumanism, and Liquid Modernity, p. 33