Who said "I represent chaos in its purest form."?

This quote is attributed to Joker.

I represent chaos in its purest form. - Joker

"I represent chaos in its purest form."

Joker

"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."