Who said "Gotham has had a no killing rule for twenty years."?

This quote is attributed to Batman (DCEU).

Gotham has had a no killing rule for twenty years. - Batman (DCEU)

"Gotham has had a no killing rule for twenty years."

Batman (DCEU)

"Do you bleed? You will."

"That's how it starts. The fever, the rage, the feeling of powerlessness."

"We have a list of names, but we are not going to read them."

"The world has been so caught up in what he can do, nobody has asked what he should do."