Who said "I am both the disease and the cure."?

This quote is attributed to Harvey Dent.

I am both the disease and the cure. - Harvey Dent

"I am both the disease and the cure."

Harvey Dent

"The night is darkest just before the dawn."

"I believe in Harvey Dent."

"You either die a hero or live long enough to see yourself become the villain."

"Fairness is the foundation of justice."