Who said "The best of us must sometimes play with fire."?

This quote is attributed to Joker.

The best of us must sometimes play with fire. - Joker

"The best of us must sometimes play with fire."

Joker Courage

"Everything burns."

"Do you want to know the funny thing about all your big plans? They don't matter."

"The only sensible way to live in this world is without rules."

"Madness is like gravity - all it takes is a little push."

"Never let fear stop you from chasing your dreams."

"Courage is being afraid but doing it anyway."

"Sometimes you gotta do what you gotta do."

"Sometimes you have to be the monster to stop the monsters."