Who said "Change is nature's favorite riddle"?

This quote is attributed to Riddler.

Change is nature's favorite riddle - Riddler

"Change is nature's favorite riddle"

Riddler Change

"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."

"Change brings new opportunities."

"Every day is a new opportunity."

"Healing doesn't mean forgetting."

"You either get better or you get bitter."