Who said "Imagination is the only weapon that matters."?

This quote is attributed to Joker.

Imagination is the only weapon that matters. - Joker

"Imagination is the only weapon that matters."

Joker Imagination

"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."

"Imagination is more powerful than knowledge."

"The world is full of wonders if you know where to look."

"You have the imagination of a child, Lucy"

"The world is full of mysteries waiting to be solved."