Who said "Imagination is the only true weapon."?

This quote is attributed to Green Goblin.

Imagination is the only true weapon. - Green Goblin

"Imagination is the only true weapon."

Green Goblin Imagination

"Out, am I?"

"You know how much you've sacrificed to fight me? Everything! But the cunning warrior survives by admitting what he is."

"The cunning warrior survives by admitting what he is."

"I'm something of a scientist myself."

"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."