Who said "Happiness is solving the riddle of your own existence."?

This quote is attributed to Riddler.

Happiness is solving the riddle of your own existence. - Riddler

"Happiness is solving the riddle of your own existence."

Riddler Happiness

"Riddles are the most honest form of communication - they demand truth wrapped in mystery."

"A mind that cannot solve a puzzle is a mind that cannot live."

"Questions are the doorway to knowledge, answers are merely the threshold."

"The greatest riddle is why people fear enlightenment."

"Babalú!"

"My greatest joy is making people smile."

"Laughter and love make a home."

"The best things in life are free."