Definition of Personification
In Chapter 13, when the Monster discovers its own ugliness and realizes people have been judging it based on its appearance rather than its nature, he describes the experience of gaining this knowledge through personification and simile:
Of what a strange nature is knowledge! It clings to the mind when it has once seized on it like a lichen on the rock. I wished sometimes to shake off all thought and feeling.
In Chapter 16, the Monster is rejected by the De Lacey family. The Monster, in a fit of rage and loneliness, personifies the wilderness around it:
Unlock with LitCharts A+The cold stars shone in mockery, and the bare trees waved their branches above me; now and then the sweet voice of a bird burst forth amidst the universal stillness. All, save I, were at rest or in enjoyment; I, like the arch-fiend, bore a hell within me, and finding myself unsympathized with, wished to tear up the trees, spread havoc and destruction around me, and then to have sat down and enjoyed the ruin.