Who said "Death is just another joke waiting to be told."?

This quote is attributed to The Joker.

Death is just another joke waiting to be told. - The Joker

"Death is just another joke waiting to be told."

The Joker Death

"All you care about is money. This town deserves a better class of criminal."

"I'm not a monster. I'm just ahead of the curve."

"Madness is like gravity. All it takes is a little push."

"Everything burns."

"Death doesn't scare me anymore."

"Death and I are old friends."

"Welcome to my world."

"Death is just the beginning."