 Its believed by many that the famous line "A mans gotta do what a  mans gotta do," widely attributed to a John Wayne (I) (qv)  Western character, is spoken by Wayne in this film, however, it  isnt. His character, The Ringo Kid, instead says "There are some  things a man just cant run away from," when asked why he intends to  stay and avenge his familys murders rather than try to escape to  Mexico.