Who said "This is who I am. This is what I do."?

This quote is attributed to Frank Castle.

This is who I am. This is what I do. - Frank Castle

"This is who I am. This is what I do."

Frank Castle

"Punishment is a language they understand."

"I'm not a hero. I'm a tool, sharpened and aimed."

"The only way to stop evil is to be better at it than they are."

"Mercy is for the living. The dead don't care."