Who said "I will show them all the error of underestimating me."?

This quote is attributed to Green Goblin.

I will show them all the error of underestimating me. - Green Goblin

"I will show them all the error of underestimating me."

Green Goblin Motivation

"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."

"I believe in working hard for what you want."

"Never underestimate the power of determination."

"I don't need a reason to fight."

"The most important thing is the mission. Nothing else matters."