Who said "It's all part of the plan."?

This quote is attributed to Joker.

It's all part of the plan. - Joker

"It's all part of the plan."

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."