What metaphors are used in I Am Legend by Richard Matheson?

Metaphor:

“Are his deeds more outrageous than the deeds of the parent who drained the spirit from his child… is he worse than the parent who gave to society a neurotic child who became a politician?”

“He had no idea how long he’d been there. After a while, though, even the deepest sorrow faltered, even the most penetrating despair lost its scalpel edge. The flagellant’s curse, he thought, to grow inured even to the whip.”