Who said "Never kill with your gun. Use it only to scare."?

This quote is attributed to Batman (1989).

Never kill with your gun. Use it only to scare. - Batman (1989)

"Never kill with your gun. Use it only to scare."

Batman (1989) Justice

"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."

"Justice must always prevail."

"You think I'm just some animal?"

"Fighting for what's right never gets easier."

"Justice is worth fighting for."