Might be this is the one I was thinking of? [INDENT] I've always followed my father's advice: he told me, first to always keep my word and, second, to never insult anybody unintentionally. If I insult you, you can be goddamn sure I intend to. And, third, he told me not to go around looking for trouble.John Wayne
US movie actor & director (1907 - 1979) [/INDENT]
He never said that in any movie, however he did say it in his playboy interview.
