Who said "Failure is simply a riddle you haven't solved yet."?

This quote is attributed to Riddler.

Failure is simply a riddle you haven't solved yet. - Riddler

"Failure is simply a riddle you haven't solved yet."

Riddler Perseverance

"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."

"Perseverance is the key to success."

"Don't give up on what you believe in."

"I've been through worse."

"You learn to live with the pain."