Who said "The joke is eternal because people are eternal fools."?

This quote is attributed to Joker.

The joke is eternal because people are eternal fools. - Joker

"The joke is eternal because people are eternal fools."

Joker Humor

"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 underestimate the power of a good laugh."

"Laughter is the best medicine."

"A good laugh is the best medicine."

"Laughter is contagious and wonderful."