One of my favorite sayings that I use almost daily is “a man’s gotta know his limitations.” Sure, it’s actually from Harry Callahan, but Clint played the role so well, it’s like they’re the same person.
My two are from “Unforgiven”.
“Deserve’s got nothing to do with it.”
“Well, we all got it comin’ to us kid.”
(Not sure how accurate those quotes are!)