Who said "I don't need to be understood—I need to be effective."?

This quote is attributed to Batman (1989).

I don't need to be understood—I need to be effective. - Batman (1989)

"I don't need to be understood—I need to be effective."

Batman (1989) Work

"It's not who I am underneath, but what I do that defines me."

"I am vengeance, I am the night, I am Batman."

"Criminals are a superstitious and cowardly lot."

"I have one rule."

"Hard work never killed anybody."

"Work with purpose and integrity."

"Hard work pays off in the end."

"A man's gotta do what a man's gotta do."