Mattie Ross: [LaBoeuf is whipping her] Are you going to let him do this, Marshal?
Rooster Cogburn: [watches for a moment] No, I don't believe I will. Put your switch away, LaBoeuf.
LaBoeuf: I aim to finish what I started!
Rooster Cogburn: It'll be the biggest mistake you ever made, you Texas brush-popper.
[aims gun at LaBoeuf]