Light and Dark

“She bore in her arms a child, a baby of some three months old, who winked and turned aside its little face from the too vivid light of day”

“So Roger Chillingworth—the man of skill, the kind and friendly physician—strove to go deep into his patient's bosom, delving among his principles, prying into his recollections, and probing everything with a cautious touch, like a treasure-seeker in a dark cavern."

The light and dark in this novel represent the constant struggle between good and evil.