Who said "You see, I'm a man of simple tastes."?

This quote is attributed to Joker.

You see, I'm a man of simple tastes. - Joker

"You see, I'm a man of simple tastes."

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."