Duke humor...
Duke played a Roman soldier in The Greatest Story Ever Told, and he only had one line, looking up at the cross and saying "Truly, this man was the Son of God." The director George Stevens wasn't happy with Wayne's first take and told him to "put a little more awe into the line." When the cameras rolled again, Wayne grinned and looked up at the cross and drawled in a most un-Roman western accent, "Aaah, truly, this man was the Son of God," sending everyone into hysterical laughter. His third take was perfect.
